水流

The flow regimes of all kinds of inlets and chambers, the pattern of lower stream current accouplement, the velocity distribution, the status of lower stream current back flow and tail water fluctuation are mensurated in details.

测定各种进口流态、闸室流态、下游水流衔接流态、流速分布以及下游回流和尾水波动状况。

M alaria lurks there, and the men say there is cyanide in the water.

疟疾在这里潜伏，人们说还有氰化物污染着水流。

The flows stopped, and Alexandrina's level has dropped 1.5 metres.

水流停止了，亚力山德里娜湖的水平面下降了1.5米。

When the gas flux is constant, the ratio of reduced resistance is improved with the increase of the water stream velocity. However, the relationship between the gas flux and the ratio of reduced resistance is more complex. When the water stream velocity is constant, if the gas flux is small in contrast, the effectiveness of reduced resistance is not obvious. But when the gas flux increased, the jetted gas will form """"archform"""" which will augment the shape resistance. In this condition, resistance could not be reduced and could even be increased, if the gas flux continues to be increased. So that there needs setting a baffle called step, which introduces the jetted gas into the turbulence boundary layer. In this case, the shape resistance may be fairly great. Besides, the waterline of model has also some effect on the ratio of reduced resistance, which acts on the size of wave. If waterline is deep, the wave could not affect the deployment of microbubble layer, so there is almost no effect on ratio of reduced resistance. However, the wave would affect distributing of microbubble layer under the model so that the gas could leak out from the two sides of model and directly affect the ratio of reduce resistance if the waterline is very small. Whether installing the dashplate or not has also the great influence on the effectiveness the ratio of reduced resistance. From the results of experiment, conclusion is that adding dashplate will greatly improve the effectiveness of reduced resistance.

当喷气量一定时，水流速度增大，减阻率提高；喷气量与减阻率之间的关系比较复杂，速度一定时，如果喷气量较小，减阻效果就比较差，但当喷气量增大的话，喷射出的气体就会形成一个&拱度&，增加了船模的形状阻力，在这种情况下最好采取断阶喷气，把气体引入到湍流边界层中，在这种情况下，船模的形状阻力比较大；船模的吃水对减阻率也有一定的影响，主要表现在波浪大小上，如果吃水较深，波浪影响不到微气泡层的分布，对减阻率不会造成太大影响，如果吃水较浅，波浪就会影响到微气泡层在船模底部的覆盖情况，可能会有部分微气泡从船模两侧泄漏，这样就直接影响到了减阻效果；是否安装压浪板，对减阻率也有较大的影响，从试验结果可以看出，在船模尾部加设了压浪板时，减阻效果明显得到改善。

Zhang Rong points out characteristic of Yellow River arenose above all here, then put forward current and riverbed to develop the relationship of silt.

张戎在这里首先指出黄河多沙的特点，继而提出了水流与河床冲淤的关系。

In the middle of the river, I had a look at the river unconsciously, suddenly felt blackout, began to awag.

离河中浅滩还有一半的距离时，无意识的看了下身边的激流，突然一阵眩晕袭上心头，感觉自己的身体随水流开始摇摆。

Two forces during the backwashing, the sheer stress of water and the frictional stress between the particles of media, were studied and compared with the adhesion of biofilm.

研究了反冲洗过程中的两种颗粒脱附力：水流剪切力和颗粒间摩擦力，并将它们同颗粒附着力进行了比较。

It is join Erie and an aqueduct that install rude lake, the river is winding and labyrinthian, the cloth way that state of American new York has south is much, north installs the Yang Ge of rude province to press down to Canada, full-length only 54 kilometers, altitude falls continuously from 174 meters however reach 75 meters, bizygomatic breadth of upriver reach river 3 kilometre of 2 ～, surface fall only 15 meters, current also relatively delay.

是连接伊利湖和安大略湖的一条水道，河流蜿蜒而曲折，南起美国纽约州的布法多，北至加拿大安大略省的杨格镇，全长仅54公里，海拔却从174米直降至75米，上游河段河面宽2～3千米，水面落差仅15米，水流也较缓。

The results show that the velocity of the flowbecomes larger at the narrow areas, the breadthwise distribution of the velocity isinfluenced by the underwater landform and the riverway. The computational watertemperature near the dam agrees well with the measured data.

计算所得的流场与河道地形相比可以看出，水面狭窄的江段水流流速较大，江段突扩段附近有明显回水区，流速的横向分布受河道弯曲及水下地形和河道主槽影响。

Though usually confined by winds and currents to move close to the coast, the largest icebergs recorded are calved, or broken off from, the Ross Ice Shelf of Antarctica .

虽然通常仅限于由风和水流向靠拢沿海，最大的冰山记录calved ，或中断，从罗斯冰架上的南极洲。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。