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This paper introduces the research results of techniques of testing PC pump oil well through one-year efforts. Which covers the mathematical models of a number of force characteristics strength analysis, and resonance critical problems of rotation rod-string in PC pump wells: resulting of testing method of polish-rod load and rotation rate on the basis of feasible demonstration and technical requirement analysis; study and manufacture of system of testing PC pump well, which involves sensor, collector ring, acquisition circuit and computer; research and determination of assistant technology of testing force on rotation polish-rod and formulation of testing force on polish-rod. A spot testing has been carried out by means of the above research fruit and good results have been achieved.The success testing results in has laid a strong foundation for the oil well diagnosis.

本论文介绍了对螺杆泵采油井的研究成果，其内容包括，对螺杆泵采油井中的旋转杆柱的若干受力特征、强度分析方法及共振临界问题进行数学建模；在可行性论证和技术需求分析的基础上，研究产生了对油井进行光杆负载和旋转速度测试的办法；研究制作了螺杆泵采油井测试系统，它包括传感器、集流环、采集电路和计算机等；研究确定了对实施旋转光杆测力的辅助工艺；制定了对光杆受力进行测试作法，利用以上研究成果实施了现场测试，并取得了理想的结果。

Production equipment are now hundreds of machines, employees over 50 people, manage a number of production personnel, and has experienced technical personnel, and constantly develop new products, is a productive multi-species, multi-string, professional manufacturer, specializing in the production of jacquard tape, lace, cotton belt, nylon belt,, PP rope,, and metal buttons, zippers and so on a variety of industries.

现在生产设备数百台机器，员工50人以上，管理生产人员数名，并且有经验丰富的技术人员，不断开发新产品，是一家具有生产多品种、多用途绳带，专业生产厂家，专业生产提花带、鞋带、棉带、尼龙带、丝绳、PP线绳、纽绳、及金属纽扣，拉链等等多种行业服务。

The closet was a shallow cavity with a wooden rod braced across, a faded cretonne curtain on a string closing it off from the rest of the room.

Jack的衣柜空间狭窄，架了一根横向木杆，以串了绳子的褪色大花帘布开合，以隔开房间其他部分。

So I purposely put on a look of impatience, said:"Mom, I am sitting in this dead heat faster, let me walk out holding a bottle on a string it."

于是，我故意装出不耐烦的样子说："妈妈，坐在这都快热死我了，让我自己举着吊瓶出去走走吧。"

Monetary easing--even unorthodox--is like pushing on a string when （1） the problems of the economy are of insolvency/credit rather than just illiquidity;（2） there is a global glut of capacity （housing, autos and consumer durables and massive excess capacity, because of years of overinvestment by China, Asia and other emerging markets）, while strapped firms and households don't react to lower interest rates, as it takes years to work out this glut;（3） deflation keeps real policy rates high and rising while nominal policy rates are close to zero; and （4） high yield spreads are still 2,000 basis points relative to safe Treasuries in spite of zero policy rates.

因为目前存在四方面问题：（1）金融层面的问题不仅是流动性不足，还在于资不抵债；（2）由于中国、亚洲及其他新兴市场持续多年的过剩投资，在住房、汽车、耐用消费品等领域形成了庞大的全球性产能过剩；（3）尽管名义政策利率已接近零点，但通缩却使得实际政策利率居高不下，甚至继续上升；（4）尽管政策利率接近零点，但高风险的高收益证券与安全的美国国债之间的利差仍高达2000个基点。

Had visited a plantation, come across the leveret of a mushroom, I take a picture enthusiasticly to her, the; in putting the story of she and forest into the bosom has waded brook, fish spitting bubble happily, frog is putting sound to cry happily aside, I draw out recording pen rapidly, write down this string of note; that strings together lovely absurdity

走过森林，偶遇一只采蘑菇的小兔，我热情地给她拍照，把她和森林的故事放进怀中；趟过小溪，鱼儿愉快地吐着泡，青蛙在一旁放声欢叫，我赶紧掏出录音笔，记下这一串串可爱可笑的音符

It's no myth, though it is what physicists call a "fictitious force." If you tie a rock to a string and spin it around, it feels as though some force is trying to drive the rock away from the center of the spin.

不是呀，物理学家称这种力量为"虚拟力"，如果你用绳子绑住一块石头然后旋转它，你就会感到有种力量试图使石头远离旋转中心。

A finite sequence of symbols from a given alphabet will be called a string over the alphabet.

从字母表中取有限个符号组成的序列，我们称之为"字母表上的符号串"。

As I came home through the woods with my string of fish,trailing my pole, it being now quite dark, I caught a glimpse of a woodchuck stealing across my path, and felt a strange thrill of savage delight, and was strongly tempted to seize and devour him raw; not that I was hungry then, except for that wildness which he represented.

当我提着一串鱼，拖着钓竿穿过树林回家的时候，天色已经完全黑了下来，我瞥见一只土拨鼠偷偷地横穿过我的小径，就感到了一阵奇怪的野性喜悦的颤抖，我被强烈地引诱了，只想把它抓住，活活吞下肚去，倒不是因为我那时肚子饿了，而只是因为它所代表的是野性。

"It's a common annoyance in everyday life, that anything that's like a string inevitably seems to get itself into a knot," said the study's senior author Douglas Smith of the University of California, San Diego.

研究报告的资深作者，圣地亚哥市加州州立大学教授道格拉斯。史密斯称："在人们的日常生活中一件普遍烦人的事情就是任何一件绳状物体都不可避免地好像会自我打结"

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。