按不同流态及流区对明渠水流阻力系数的计算公式进行了归纳和总结。
The calculation formulas of the resistance coefficient in open channel flows were summarized according to different flow patterns and flow regions.
其次，采用量纲分析法得出滩地植被对复式河槽水流阻力影响的因素。
Secondly, using dimensional analysis method, it is found the influence factors of flow resistance in compound channel with vegetated floodplains.
滩地植被对复式河槽水流阻力特性的影响十分复杂，有待进一步研究。
Flow resistance in compound channels with vegetated floodplains is quite complicated to further study.
本文在考虑水流阻力的情况下，提出计算等空化数曲线的方程组，并给出电算程序。
This paper gives, from the energy equation for rapidly varied flow, the equations for the calculation of the curve of equal cavitation number in consideration of friction losses.
水容是继水流阻力之后反映土壤—植物系统中水分动力学性质的又一重要水力学参数。
Hydraulic capacitance is a important hydraulic parameter to describe hydraulic dynamics of soil plant system after hydraulic resistance.
桩群的水流阻力比单桩的水流阻力要复杂得多，理论上解决桩群水流阻力目前还较困难。
The flow resistance of pile group is more complicated than that of single pile. It is difficulty to solve flow resistance of pile group theoretically at present.
采用加宽的水道设计，加大进出口水道，使水流阻力大大减小，发动机的冷却效果得到了很大提升。
The engine use the design of widening water channel, enlarge imput and output water channel, enhance the engine cooling effect.
这些现象说明，水流阻力是蒸腾波动产生的重要前提条件，而蒸腾波动则可能是气孔开合波动的直接结果。
All the phenomena show: water flow resistance is the important prerequisite to cause transpiration fluctuation, and the latter can be the result of stomatal oscillation.
本文应用船舶阻力经验公式，对三峡工程明渠施工通航船队，进行了航行阻力计算分析，并建立了水流阻力与航速；
By using the empirical formulae of the ship resistance, the sailing resistance computation of the ship team for Three Gorges Project open channel navigation has been conducted.
从应用角度看，评价散热器散热性能的主要技术指标有散热性能、散热器空气阻力以及水流阻力，分别简称为散热量、风阻及水阻。
From the using point of view, the main technical performance to appraise the heat transfer performance of automobile radiator includes heat transfer performance, air resistance and water resistance.
水流克服这种阻力的速度与岩石的渗透性有关。
The rate at which the flowing water overcomes this resistance is related to the permeability of rocks.
由于水流的虹吸现象，潜水员需要携带额外的氧气来对抗这种阻力。
Divers must bring extra breathing gas when they'll have to struggle against a siphoning tide.
吊篮和平盘式取样器加大了对水流的阻力。
The basket and pan types cause an increased resistance to flow.
沙波运动是冲积河流泥沙运动的一种重要形式。沙波的消长对河道水流的阻力损失有很大的影响。
Sand wave movement is an important form of sediment movement for alluvial rivers and has a great effect on stream resistance.
通过实验室人工降雨水槽试验，研究了降雨影响下浅层水流的阻力规律。
The hydraulic resistance of shallow water flow under the influence of rainfall has been investigated through the flume experiment with artificial rainfall.
分析表明，对于平原河道，动力项和阻力项偏离是主要的，惯性项的偏离对模型水流运动影响较小。
For mild channel, it is shown that dynamic term and resistance term deviations caused by the distortion influence model water flow movement more seriously than inertia term do.
龙骨，小鳍和盔甲帮助引导水流流过身体表面，他们用这种方式来降低水的阻力（看图示）。
The keels, finlets, and corselet help direct the flow of water over the body surface in such as way as to reduce resistance (see the figure).
测试得到随水流速度增加，阻力系数增大，系缆所受阻尼力也增大。
With the increase of flow velocity and drag coefficient, the damping force increases.
本文还导得动平床情况下的流速分布公式、阻力公式和输沙率公式，使动床的水流运动和输沙过程得以联解。
The formulas of velocity distribution, flow resistance and bed load transport rate are obtained, in which the flow and sediment movement are considered simultaneously.
本文在输沙实验的基础上，从研究水流结构着手，分析了水流和泥沙之间的相互作用关系，讨论了动床沙粒阻力和底沙输移规律。
Based on sediment transport experiments, the interaction between flow and sediment movement is analysed and the problems of grain resistance and bed load transport on plane movable bed are discussed.
篮和平盘式取样器加大了对水流的阻力。
The basket and pan types cause an increased resistance to flow.
阻力沿河宽分布除河道断面形态影响之外，滩槽水流差异也是不可忽略的。
Including influence of the section shape, the different water condition between floodplain and channel is another import factor that influents the resistance distribution along river width.
完成了不锈钢螺纹管凝汽器的工程热力计算、变工况核算、冷却水流动阻力、蒸汽流动阻力和漏气量计算。
The engineering thermal calculation, the calculations of different operating conditions, of the resistance of water flow and vapor flow, and of the air leak amount were made.
通过理论分析、水槽试验研究了低淹没流动下穿越框架群水流的阻力特性，为四面六边透水框架群护岸技术的推广应用提供依据。
Through theoretic analysis and flume experiments, the characteristic of water resistance through permeable frame groups under lower submerged flow is researched.
输沙渠道设计的基本关系式应是水流挟沙力关系、河相关系、水流连续原理及阻力公式。
The basic relationships used in the design of soil transferring channel are water silt carrying capacity, river phase, water continuity and resistance formula.
同时水流流速减小，阻力系数增大，这说明水流克服阻力做功所消耗的能量也增加。
It shows that consumed energy for working of water flow against resistance tends to increase.
在前人研究的基础上，分别建立了沙垅阻力、总阻力、冰期阻力与水流强度间的关系。
Based on the previous research results related, the relationships between sand-ridge resistance, total resistance, ice-period resistance and water flow intensity are established respectively.
提出挠流阻力引起探针杆挠曲造成水流场测量误差的迭代计算修正方法，分析该方法的收敛性及收敛方式。
A method was proposed to correct errors in water flow field measurements with 5 hole probe because of rod bending caused by flow drag. The convergence of the computing method was analyzed.
本文提出了船闸输水系统鹅颈管段的水流特性及阻力系数的试验结果。
This paper presents the experimental results of the flow characteristics and head loss coefficients of gooseneck section in lock filling and emptying systems.
冰冻是寒冷地区普遍存在的一种自然现象，而凌汛则是河道里的冰凌对水流的阻力作用而引起的一种涨水现象。
Freezing is a general phenomenon in the cold area. Ice flood is a rise of water when ice is hindered in river course.
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