水流

The roughness coefficients are inverse proportional to Reynolds number on gentle slopes, and on the contrary,they are direct proportional to Reynolds number on steeper slopes.

在坡度较陡的坡面上，由于水流侵蚀作用强度的变化及重力影响作用的渐趋显著，阻力系数又会随雷诺数的增大而变大。

This kind of pipe features: lower density;sound-proof, when used as drain-pipe, water flow against the screw-thread inwall downwards, which solves the problem of noise.

这种管道的特点：密度较低；健全溜走，当用作排水管、水流对螺纹内壁调低它解决了噪声。

The wastewater loss can be lessened if the irrigator will reduce the size of the irrigation streams when they approach the lower end of the rows.

灌溉水流接近沟道末端时，如果灌水员减小流量，就能减少废泄水量。

The deep water deposition means the deposition in the area where the water depth is larger than 30 meters, in which the major sediments are coarse sand and gravel. This kind of deposition is the relic deposition formed by the Pleistocene alluvial-lacustine deposition reworked under modern channel currents actions, and ususally the Holocene acummulation lack in the deep waters. The transitional zone deposition is the deposition between the low tidal level line and the 30 meters isobath, where the sediment types is changeable and the grain sizes are gradually coarsening from the low tidal line to the deep water area. This kind of deposition is developed by the deep water eroded sediments sorting under the transitional zone current action. The different types distributed along the isobath. The tidal flat deposition is the fine sediment deposition on the tidal flat which is flo sedimentation of the silty clay under the tidal flat dynamic action and ususally developed fluid mud on the lower tidal flat. The channel mouth deposition is the deposition in the channel mouth area. According to the sediment types, it includes sand deposition where there are coarse sediments supply and silt deposition where there are only fine sediments surpport.

峡道深水区沉积是指水深大于30米的峡道底部沉积，它以粗颗粒砂砾石沉积为特色，是现代峡道水动力对第四纪海退时发育的冲洪积和坡积物进行改造形成的蚀余沉积，全新世沉积地层往往缺失；峡道过渡带沉积是指水深介于低潮位线至30米水深线之间发育的峡道边坡沉积，该带沉积以沉积物类型多样为特色，自低潮位线至30米水深线，沉积物粒级逐渐变粗，由粉砂质粘土逐渐递变为中粗砂，是峡道深水区沉积物经多次分选沉积而发育的，基本平行于等深线分布的条带状沉积，在岸坡较陡岸段，过渡带下部可发育重力沉积；峡道潮滩沉积是指在低潮线与海岸线之间发育的细颗粒沉积，它是粘性细颗粒泥沙在潮滩动力作用下，发生动水絮凝沉积而形成的粉砂质粘土沉积，在低潮滩可发育浮泥；峡道口门区沉积则是在峡道汇入大海或海湾时，在峡道出口水流影响所及范围的沉积，根据峡道口门区供给泥沙的特性，峡道口门区沉积有粉砂质淤泥沉积和砂质沉积两种类型。

According to hardware design,control system of equipment is studied which transducer closed-loop control is at the core.The equipment can eject stable and isopiestic pressure water jet,and display the current pressure of water jet real time.

根据硬件设计，研究了设备的控制系统，主要以变频器闭环控制电机为核心，使喷嘴射出稳定、恒压的水流，并实时显示当前的水射流压力。

To jet a powerful stream of water at the burning building .

向燃烧着的建筑物喷注强有力的水流。

To jet a powerful stream of water at the burn ing building .

向燃烧着的建筑物喷注强有力的水流。

A structure, often decorative, from which a jet or stream of water issues.

人造喷泉：一种装饰性的能使水流喷出的装置

Based on the experiments a series of motion equations of water in jig were developed.

在对实时采集的大量数据观察分析的基础上，提出了一整套水流运动方程。

This is the principle of the jigging concentrator. Due to the various methods to push water, there is a variety of jigging concentrator types.

由于推动水流运动的方法是多种多样的，因此跳汰选矿机的型式也是多种多样的。

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。