论文里面的外国文献 石油地质类的英文文献5000字左右外国人写的

石油地质类的英文文献5000字左右外国人写的  

石油地质类的英文文献5000字左右外国人写的

找到一些,因为你的要求涵盖的范围满广我找的这些论文也五花八门,你看看哪些能用吧.
1.Petroleum Geology of the North Falkland Basin
:desireplc.co.uk/pdfs/FIN_article_060906.pdf
2.PETROLEUM GEOLOGY OF THE DEEPWATER JACKFORK GROUP AND ATOKA FORMATION WITH A PRIMER ON THE PETROLEUM GEOLOGY OF DEEPWATER
DEPOSITIONAL SYSTEMS
:pttc./workshop_summaries/sol_2004/539.pdf
3.Petroleum Geology of North Africa
:gbv.de/dms/goettingen/242183379.pdf
4.PETROLEUM GEOLOGY IN THE UNITED STATES GEOLOGICAL SURVEY
:kb.osu.edu/dspace/bitstream/1811/3638/1/V48N03_095.pdf
5.Petroleum Geology in the United States Geological Survey
:library.unsw.edu.au/~thesis/adt-NUN/uploads/approved/adt-NUN20050405.112610/public/01front.pdf
6.Petroleum Geology and Resources of the Amu-Darya Basin, Turkmenistan, Uzbekistan, Afghanistan, and Iran
:pubs.usgs.gov/bul/2201/H/pdf/B2201H_508.pdf
7.PETROLEUM GEOLOGY OF DEEP-WATER CLASTIC (TURBIDITE DEPOSITIONAL SYSTEMS
:ipa.or.id/files/COURSE%20FLYERS%20(Sept.%203-7).pdf

跪求关于“企业社会责任”3000字左右中文的英文文献！

给我你邮箱，给你发一篇看看行不行~~

求一篇韶关旅游经历 不要英文的 要500字左右 就可以了 不要写太远的地方

第一天，丹霞山需要1天，门票120元，如果是选在天气不怎么好的春天来玩，不太建议过夜，因为没什么机会看日出，有一天时间走走就差不多了。如果是想看日出的话，那就建议第一天先去南华寺，南华寺出来呢下午就进丹霞山，晚上在丹霞山脚住一晚，半夜大约4点多5点（具体时间嘛，要看日出的时间定咯）…可以上山看日出。我曾经看到过几次，真的蛮漂亮的…不过能看到日出的日子其实不多，毕竟云雾还是会有D。
第二天，就可以一路从丹霞玩下来，基本上，一天也差不多的了。如果是第一天就去了丹霞的，第二天其实不太建议去大峡谷和一些爬山的地方了…因为体力消耗蛮厉害的…可是韶关本来就多山…其实也蛮囧的…如果LZ觉得累的话，可以去泡个温泉…天气冷的时候，建议LZ去汤溪或者枫湾温泉…不怎么冷，可以考虑去曹溪的…如果是去曹溪的话，可以把南华寺的行程放这里，因为就在2隔壁…晚上可以到韶关大学，吃东西很便宜，四-五人吃一餐饭也不过是60-80元。住旅馆的话，有40，60，80元的。韶关大学北门堕乐街路口有一家汝家旅馆，主要都是住学生，价格便宜，干净卫生，价格有40元，60元，80元的。是全天24小时供应热水，独立卫生间，空调，电视。还有4M宽带。最主要安全，装有监控系统，电子围栏系统，报警系统，广播背景音乐，最重要的是空气能热水系统，不会产生一氧化碳中毒哦。还有这里的水不是自来水，都是引自山上的山泉水，不信可以小试一口，挺甘甜的。在火车站花15分钟左右坐7路公交车在韶关大学北门下车往前走50米即到。
第三天，天气热了，可以去玩漂流…如果LZ还是喜欢爬山…那乳源的南岭国家森林公园或者大峡谷还有乐昌的金鸡岭啊古佛岩啊龙王潭啊，都是不错的选择…

春联的来历？不要字数太多的，50左右就可以了！谢

春联，起源于桃符。"桃符"，周代悬挂在大门两旁的长方形桃木板。
五代时，西蜀的宫廷里，有人在桃符上提写联语。宋代，桃符由桃木板改为纸张，叫"春贴纸"。
明代，桃符才改称"春联"。此后春联便沿习成为习俗，一直流传至今。

我为妈妈洗脚
在电视里看到，有位老师给学生布置的作业是：回家给妈妈洗脚。听着老师布置的奇怪任务，同学们一脸的惊诧：平时都是妈妈给我们洗脚，现在，要我们给妈妈洗，多难为情，要是被同学们知道了，脸往哪搁呀！看后，我感慨万分。难道为含辛茹苦养育自己的妈妈洗洗脚，真的“搁不下脸”吗？那时那刻，我就萌生了给妈妈洗脚的念头。
晚上，当妈妈得知我要为她洗脚时，她也是满脸的不解，不知我葫芦里卖的什么药。在我的再三请求下，她才半推半就。我高兴地打来一大盆热水，对妈妈说：“妈，毛衣等下再织吧，泡泡脚再说。”我把妈妈硬拽在椅子上，帮她挽起裤脚，脱下袜子。她的腿有些哆嗦。(细节)“妈，冷吗？”“嗯，有点。”“等下泡泡就好了。”我把妈妈的双脚泡入水中，用力地替妈妈搓脚，突然妈妈像触电一般，将脚从水盆中抽出来，溅得我满脸是水。(又是细节) “妈，你怎么了？”“妈妈脚痛。”我低头仔细一看，吓了一跳，发现妈妈脚上有许多冻疮。“妈妈，这是怎么啦？”妈妈淡淡一笑，说：“小时候，妈给你洗脚，你总是不老实。有一次，妈妈倒了一盆开水，还未来得及掺水，盆就被你（踢）打翻（了），开水正烫在妈脚上。那时，正是数九寒天，妈妈又每天忙着上班，没把它当回事，就生了冻疮，以后每年都发……”
为妈妈洗脚这一段写得非常细。
我的心突然像被什么东西撞击了一下，眼角湿湿的，妈妈后面的话我没听清，想不到妈妈的双脚竟也藏着这么多的故事，这是我（做梦也想不到的）往常所不知道的。我默默地捧着妈妈的脚，很小心地搓着。妈妈的双脚结着一层厚厚的老茧，有些地方已经开裂，经水浸泡，虽不是那么刺手，(又是细节)却也能明显感觉到。我的心不禁一酸，不争气的眼泪又来了，滴落在水盆里。我为以前对妈妈的误解而自责。
小时候的我是幸福的，妈妈和我形影不离，我在妈妈的呵护下健康成长。上学后，由于家庭负担过重，妈妈不得不背井离乡，出外打工。年幼的我，看到自己的同学被父母们送进接出，嘘寒问暖，心里总不是滋味。尤其是下雨天，总渴望在送伞的队伍中能发现妈妈的身影，可每次给我的总是失望，在我的心中，竟对妈妈滋生出几分恨来。一种失落感顿时涌上心头，觉得幸福真的离我好远好远。
现在，看着妈妈的双脚，我什么都明白了。在这寒冬腊月，妈妈何曾想到自己的痛脚呢？她所担心的只是女儿，在为女儿赶织毛衣。而自己何尝体会到妈妈那不被女儿理解的痛苦呢？不知不觉中，水都有些凉了，我赶忙又往盆里加些开水，抱着妈妈的脚，轻轻地洗着，用心地洗着，以期洗去我心中的愧疚，水花夹杂着我的泪花，在我眼前飞溅。
我突然间觉得，在这静静的夜里，世界好像只有我和妈妈两人，一种久违的爱在我心头荡漾，我在心里不由得唱起一首歌来：世上只有妈妈好，有妈的孩子像块宝，投进妈妈的怀抱，幸福享不了……

离心泵叶轮 英文文献 5000字左右

Centrifugal is the inertia of the body, such as water droplets on the umbrella, when umbrellas slow rotation, water droplets will follow an umbrella rotation, this is because the umbrella and the centripetal force of friction as drops of water drops. But if an umbrella rotation speed up, the friction force is not enough to keep the water in circular motion, then drops out of the umbrella to the outer movements, like stones do a rope with circular motion, if the speed is too fast, rope breaks, stones will fly out. This is the so-called centrifugal.
　Basic structure of centrifugal pump is made up of six parts, namely: impeller, pump, pump shafts, bearings, sealing rings, stuffing. 1, the core part of the impellers are centrifugal pumps, its speed and high output power, impeller blades also played a major role, in front of the Assembly to pass the static balance of impeller experiment. Requirement inside and outside the surface smooth of the impeller to reduce flow friction loss. 2 also known as a pump, pump body, it is the body of the pump. Play a role in supporting fixed, and bays of the housings connected. 3, the role of pump shaft is connected take coupling and electric motor, the motor's torque to the impeller, it is the main part of transferring mechanical energy. 4, bearing is set on the pump shaft support ponent of the pump shaft, roller bearing and bearing o. Rolling bearing using butter as a lubricant oil to appropriate for the General volume of the 2/3~3/4 too much heat, too little and the noise and fever! Use of sliding bearings are transparent oils for lubricants, refueling to the oil line. Too much oil to pump seeping loss and bleaching, aidents caused by too little bearing overheating burned again! Bearing temperature in water pump is running at 85 ℃ General running at about 60 degrees, if high will find reason (whether there are impurities, oil is dark, water) and processing in a timely manner! 5, seal rings also known as a reduced ring. Clearance beeen the impeller inlet and pumping shells causing water pump of high pressure area in the General Assembly through this gap flow to the area of low pressure, affect the pump out of water, efficiency! Gap too small can cause friction and wear of impeller and pump shell. In order to increase return resistance decrease leakage, delay the service life of impeller and pump shell, foreign aid and impeller in the pump case is equipped with sealing ring, sealing gaps remain beeen the 0.25~1.10MM. 6, stuffing mainly by fillers, water seal rings, packing, product packing gland, a water pipe. Stuffing box of the role is mainly to close gaps beeen the pump and pump axle, do not let the water flow in pump to the outside to do not let outside air into the pump. Always keep a water pump in the vacuum! When the pump shaft and packing friction generates heat by water cooling tube-sealing water injection water circle makes packing! Maintain the normal operation of the pump. So in the pump runs during the inspection tour is special attention should be paid to the stuffing box of checks! Runs about 600 hours to replace the filler. 7 during the operation in centrifugal pumps, axial thrust balancing device, because the liquid is in low-voltage into the impeller, and outflow at high pressure, the pressure on both sides of the impeller, axial thrust of a link to the entry, will cause rotor axial moving, wear and vibrations, so you should set the axial thrust bearing, to balanced axial force.
The working principle of centrifugal pump is: centrifugal pump has been able to send water out is due to the effects of centrifugal force. Water pump in front of the work, of pumps and water intake pipe must be tank filled with water to form a vacuum, when the rapid rotation of the impeller, leaf water fast rotation, rotate the water flew from the impeller in centrifugal force, pump after being thrown in the water, central part of the formation of the impeller vacuum region. Sources of water in the atmospheric pressure (or pressure) through the pipe neork pressure under the action of the intake tube. This loop, you can achieve continuous pumping. This is worth mentioning: certain before the start of centrifugal pump to the pump after the shell is filled with water, can be started, otherwise the body will not plete the liquid absorption, cause of pump body heat, vibration, no water, "idle", damage to the pump ("gas up") creates the equipment aident.
Many types of centrifugal pump, classification methods there are several mon mode 1 by inhalation of the impeller: single-suction centrifugal pumps-double-suction centrifugal pump. 2 press the number of impeller: single stage centrifugal pump of multistage centrifugal pumps. 3 press the impeller structure: closed half open impeller centrifugal pump with open impeller centrifugal pump impeller of centrifugal pump. 4 aording to the working pressure: low pressure centrifugal pump pressure centrifugal pumps in vertical centrifugal pump of high pressure centrifugal pump. Installed in pump impeller in the shell 2, and fasten on the pump shaft 3, pump shaft driven directly by the motor. Pump suction tube and shell there is a liquid Central inhalation 4 5 connections. Liquid valve 6 and the end of the suction tube into the pump. Liquid discharge on pump shell 8 connected to the exhaust pipe 9. Before the starts of centrifugal pump, pump shell filling was transportation of liquids within; after the impeller shaft-driven high speed rotation, liquids must also as the turning of the leaves. Under the action of centrifugal force, the liquid to the outer edge and gain energy from the center of the impeller is parabolic, at high speed to leave outer edge into the snail-shaped impeller pump case. In the snail's shell, liquid slowdown due to a runner gradually expanded, and some of the kiic energy into static pressure energy, and finally to high pressure flow into the discharge pipe, sent to the needed place. When the outer edge of the flow of liquids by the impeller Centre, forming a certain vacuum in the center of the impeller, due to the pressure of the tank above the liquid surface is larger than the entrance to the pump pressure in the liquid will be continuous pressure into the impeller. Visible, as long as the constant rotation of the impeller, the liquid will constantly be suction and discharge.
When the pump shell contains air, due to density of air is much smaller than the density of the liquid and generate less centrifugal force. Thus, the tank above the liquid surface and lack of suction pump of pressure difference at the entrance to the fluid pressure in the tank into the pump, that is, without self-absorption capacity of centrifugal pumps, centrifugal pumps cannot send the liquid, this phenomenon is called "gas up". In order to pump full of liquid, usually in the bottom of the suction pipes installed along the bottom valve strainer, the bottom valve valve, filter function is to prevent solid matter into damage or impede the normal operation of the pump impeller in the pump.
Centrifugal pumps flow ponents are: inhalation Chamber, impeller, press out the rooms in three parts. Impeller room is the core of pumps, are also parts of the core. Work on liquid pump by impeller, its energy increases.
Classified by direction of liquid outflow
Aording to the orientation of the liquid outflow of impeller is divided into three categories: (1) radial flow impeller (centrifugal impeller) is along the axis perpendicular to the direction of liquid outflow of impeller. (2) mixed-flow impeller (mixed-flow impeller) is the direction along the axis tilt of outflow of impeller in liquid. (3) of liquid flow in axial-flow impeller direction parallel to the axis.
Classified by inhalation
Manner as the inhalation of the impeller is divided into o categories: (1) single-suction impeller (that is, from one side of the impeller inhalation liquids). (2) double-suction impeller (that is, from the inhalation of liquid on both sides of the impeller).
The cover forms to classify
Impeller cover form is divided into three categories: (1) closed impeller. (2) open type impeller. (3) half-open type impeller. Closed impeller with the very widely used, the preceding single-suction impeller of double-suction impeller are owned by this form.

急求关于城市低保或社会救助或社会保障的外文文献

自己去sciencedirect，springerlink等外文数据库下载啊
或者到知网，维普等中文数据库下载
很多的，校园网内免费获取
校园网外可以利用google学术搜索，有部分能免费下载

急：以书信的方式介绍微波炉，写一篇英语作文。字数在100~200字左右就可以了、

DearXX:
Microwave oven (microwave's boiling/microwave), just as its name implies, is to use microwave to cook cook. Microwave oven is one kind of modernization with microwave oven cooking food. Microwave is a kind of electromagic waves. Microwave magrons, by power, control circuit and cooking chamber ponents. The power to provide magrons roughly 4,000 fu high pressure, magrons in power, continuously produce microwave excitation, and then after waveguide system, coupled to cook lumen. In cooking chamber at the entrance of a rotating, near the blender, because the blender is the wind fanlike metal, after it is spinning in all directions to microwave has the reflection, so can the microwave energy evenly distributed in cooking lumen. Microwave power range is generally 500 ~ 1000 watts. Thus heating food.
Best wishes.
Your ....
Date(用英语写日期）
微波炉（microwave oven/microwave），顾名思义，就是用微波来煮饭烧菜的。微波炉是一种用微波加热食品的现代化烹调灶具。微波是一种电磁波。微波炉由电源，磁控管，控制电路和烹调腔等部分组成。电源向磁控管提供大约4000伏高压，磁控管在电源激励下，连续产生微波，再经过波导系统，耦合到烹调腔内。在烹调腔的进口处附近，有一个可旋转的搅拌器，因为搅拌器是风扇状的金属，旋转起来以后对微波具有各个方向的反射，所以能够把微波能量均匀地分布在烹调腔内。微波炉的功率范围一般为500～1000瓦。从而加热食物。