分析大小潮水位波动产生的机理；
The mechanism of the spring-neap tidal water table fluctuations is examined.
大量抽取地下水使地下水位波动的幅度增大，从而潜蚀作用增强。
Due to the extensive pumping of groundwater, the range of phreatic fluctuation was enlarged and the suffosion was enhanced.
模拟实验表明，机泵切换、控制系统性能可靠，抗水位波动性强。
The reliability of pump switch, high capability to resist fluctuation and stability of control system are proved by experiment.
在动床河工模型试验中，需要对水位波动进行实时和自动化的测量。
In mobile bed experiments, the measurement of water level needs to be real-time and automatic.
河流水位波动较大，因此，我们设计了一个中间池，从河里引进水流。
The river level fluctuates greatly. Therefore we designed an intermediating pool that draws its water from the river.
为此，在考虑浸润面影响的基础上建立了大小潮水位波动的数学模型。
Thus, with the effects of seepage face taken into account, a numerical model for spring-neap tidal water table fluctuations is developed.
尚未看到考虑阻力项后调压室水位波动随时间变化的显函数计算方法。
The explicit method for calculating surges in the surge tanks concerning the resistance item has not been seen.
水库全长660KM（360miles），有一个问题由其巨大的水位波动所引发。
One problem appears to have been caused by fluctuations in the water level of the vast reservoir, which stretches for 660km (360 miles).
这一控制法产生的水位波动最小，并使渠内水体对流量的变化有最快的反应速度。
This control method has the advantages of producing minimum level oscillation, and of maximum response speed of the channel water mass to discharge change.
同时，通过对相关场资料的分析，揭示了引起这种较大振幅水位波动的主要原因。
Meanwhile, by an analysis of the factors giving rise to the fluctuation of sea level the main cause of the larger amplitude fluctuations of sea level is identified.
基于考虑调压井水位波动的调节系统数学模型，对调节系统的动特性进行了初步分析。
Based on the governing system mathematical models which take the surge tank water level oscillation into account, the governing system dynamic performance in discussed.
该文从差动式调压室的基本方程出发，推求了差动式调压室理想设计时水位波动的计算公式。
The paper is based on the basic formula of surge tank, in which the formula of the surge in the ideal design surge tank has been derived.
摘要双机共尾水调压室是水电站引水发电系统中一种常见的布置形式，存在尾水调压室水位波动和水力干扰问题。
The tailrace surge chamber shared by two units , common in hydropower stations with diversion systems , has problems of water level fluctuation and hydraulic disturbance.
本文从调压室的基本微分方程出发，采用泰勒级数展开式推导了阻抗式和简单式调压室甩荷时水位波动的显式计算方法。
The explicit method for calculating surges in throttled surge tank and simple tank following load rejection has been derived by use of Thaler Series Expansion from the basic formulation of surge tank.
仿真结果表明，较常规PID，步进式PID控制渠道输水，水位波动小，超调量小，较适合明渠输水控制的实际运行情况。
The simulations show that the water fluctuation and overshoot are smaller using Step-PID than using general PID control method. The method is suitable to open channel flow.
研究表明：如果合理地选择设计连接管断面的尺寸和型式，就可以进一步减小有连接管的尾水调压室水位波动稳定所需的断面积。
According to this study, the optimal design in the size and shape of the linking pipe helps to reduce the sectional area for stability.
本文通过数值模拟及摄动分析，对平面形状为矩形（简称小包方案）及平面形状为曲边梯形（简称大包方案）的两种盲肠河段的水位波动进行了研究。
In this paper numerical simulation and theoretical analysis are used to study the wave in two different types of sidearm, one is a rectangular channel, another is a trapezoid channel.
通过理论和解析方法讨论连接管较长时，其内水体惯性对调压井水锤压力和水位波动的影响。实例分析表明：连接管长度增加可使调压井水锤压力升高，水位波动幅值减小。
Based on analytical method, the paper shows that raising the length of a riser can elevate the water-hammer pressure and reduce the fluctuation of water level effectively in surge tank.
桂林市柘木村水位波动诱发岩溶塌陷概率分析的结果表明：柘木村2000年水位波动诱发岩溶塌陷的概率为7.38%，2001年为1.47%，2002年为16.4%。
The probabilistic analysis of karst collapse to Zhemu village in Guilin indicates that the probabilistic was 7.38% in 2000, 1.47% in 2001 and 16.4% in 2002.
研究人员指出，低频过程诸如河流流量和地下水水位的波动，通常不会对人类产生明显影响。
The researchers pointed out that low-frequency processes, such as fluctuations in stream flow and groundwater levels, would not usually be apparent to human populations.
由于在某些地方潮汐水位的波动能达到10m或者更高，所以这成了模型主要的缺陷。
Since tidal variation can be 10m or more in some parts of the world, this is a major deficiency.
湖泊水位的波动对该种鱼类的繁殖地造成影响。
Fluctuations in the lake level have impacted fish breeding sites.
近岸含水层水位随潮水的波动而波动，同时还与海水之间发生着水量交换。
The water table of the unconfined aquifer near the coast fluctuates following the tide movement, the aquifer also exchanges water with the sea.
大机组给水泵手动并泵操作复杂，易造成汽包水位大幅波动。
Procedure of manually combing large size unit's Feed water Pump is complex and easy to cause much change of drum level.
研究表明，桥的重量，波动的水位和地震的诱发因素斜率的失败。
The researches show that the bridge's weight, fluctuating water lever and earthquake are induced factors of slope's failure.
研究表明，桥的重量，波动的水位和地震的诱发因素斜率的失败。
The researches show that the bridge's weight, fluctuating water lever and earthquake are induced factors of slope's failure.
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