查询词典 water pressure

Under ordinary conditions of pressure ,water BEC omes ice at c and steam at 100c.

在常压下，水在摄氏零度时变成冰，在摄氏一百度时变成蒸汽。

So when you step on a patch of ice, you exert pressure on the ice, which causes its molecules to move closer together. That makes them revert to their more dense state, which is water.

所以，你踏上一片冰时，就会对它产生压力，这个压力导致其分子更加聚集，使之重新回复到更加紧密的形态--水。

Under ordinary conditions of pressure ,water becomes ice at C and steam at 100C.7 e; p'{ T' s

在常压下，水在摄氏零度时变成冰，在摄氏一百度时变成蒸汽。

It observed elements of the marine environment are:(1) physical parameters, such as water temperature, salinity, currents, tide, wave and so on;(2) weather station network-related physics parameters, such as sea surface wind, temperature and dew point, pressure, sea ice, wind and waves and swell;(3) other parameters, such as solar radiation and rainfall;(4) non-physical parameters, such as pollution physical, chemical and biological parameters such as volume.

它所观测的海洋环境要素主要有：（1）物理学参量，如海水温度、盐度、海流、潮位、波浪等；（2）与天气站网有关的物理学参量，如海面风、气温及露点、气压、海冰、风浪和涌浪；（3）其他参量，如太阳辐射和降雨量；（4）非物理参量，如污染物质、化学和生物量参量等。

Friction tests in moving water and field sheer tests and seepage model tests and the effects of seepage defending and rough ratio tests and the capacity of resisting from frozen bulge and ice pressure. 2. Through the series track ageing tests of geosynthetics for 14 years, if the covering is 40cm thick and the initial strength is more than 500N/5cm, the geosynthetics can be used for at least 50 years, most to be more than 100 years. Under the same conditions, the strength and elongation of geotextile are both decrease, and for geomembrance the strength increased in early days. One important ageing index for geomembrance is embrittlement.

2通过工程现场14年的取样，进行老化试验分析，结果显示，土工合成材料在40cm厚以上岩土严密保护的条件下，初始强度大于500N/5cm，使用年限至少可达50年，多数情况可超过100年；在同等条件下，土工织物老化在力学性能上的表现是强度和延伸率都呈下降趋势，而多数土工膜在初期力学性能上表现是强度增加延伸率下降，到后期强度和延伸率才都呈下降趋势，脆化是衡量土工膜老化性能的重要指标。

This essay analyzes the method and procedure of ice-making recorded in Huai Nan Wan Bi Shu, and creatively proposes that the principle of "ice-making in summer" is refrigeration through the quick evaporation of water to absorb heat under low pressure, and that ice is made on the fine silk at the mouth of an urn, but not inside the urn at its bottom as it was conventionally thought. The essay points out three necessary conditions which should be fulfilled in order to realize "making ice in summer": low relative humidity (less than 26%), large volume of the urn (about 100 L) and proper air temperature (about 20℃).

分析《淮南万毕术》所载制冰方法和过程，提出低压下水快速蒸发吸热制冷是"夏造冰"的制冰原理；结冰的部位不是传统观点所认为的瓮底，而是在瓮口的嫌上；指出要实现"夏造冰"，需满足三个条件：相对湿度低（低于26%）、瓮的容积大（100升左右）、空气的温度适当（20℃左右）。

The law of pressure drop of ultrahigh water cut oil has also been studied.

本文的研究工作对油气混输管线的合理设计、有效管理以及油田集输管路的经济运行有着重要意义。

On the basis of analyzing in quo of the waterworks in our country, this designs a suit of constant pressure water supply automatic system paper by using variable frequency speed-regulating technology based on PLC.

本论文结合我国中小城市多层住宅小区的用水现状，设计了一套基于PLC的变频调速恒压自动控制供水系统。

Consisted of a water pump, a tank and a pressure switch, this series is relatively simple construction, no expensive but reliable and safety.

包括一个水泵，坦克和一个压力开关，这个系列是比较简单的建筑，没有昂贵的，但可靠和安全。

The analytical solution for a water tank under hydrostatic pressure proved to be accurate.

Sapountzakis等[6]分析了在静力横向与面内载荷的带肋板。

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％。