水力

The flow rate of individual sprinkler head, the residual pressure of ...

而在自动撒水设备设计过程中，无论是撒水头的配置、放水量、放水压力‥等，都与水力计算。。。

TWT is capable of and has the facilities to design and manufacture butterly valves,gate valves,check valves,hydraulic auto control valves ,shut-off valves, ball valves,exhaust valves,square gate valves,round gate valves,stainer,and pipeline accessories ranging from DN15-DN3000 at pressure rating from 0.05 to 6.4Mpa .

我公司具有设计、制造压力0.05-6.4Mpa，通径DN15-DN3000的各类蝶阀、闸阀、止回阀、水力自动控制阀、截止阀、球阀、排气阀、方闸、圆闸、过滤器、管道附件等产品能力，产品品种规格达2000余种。

To obtain the approximate solution, the pressure acting on the gate is divided into two parts, one is the fluctuating pressure of the flow underneath the stationary gate, which is investigated with experiment; the other is the hydrodynamic pressure due to the vibration, which is equivalent to the attached mass matrix, damping matrix and stiffness matrix of the equation.

为了获得方程的近似解，本文将作用在闸门上的水动力荷载分为两个部分，一是闸门无振动时的水流压力，用水力模型试验测定；二是由于闸门振动引起流场扰动的动水压力，通过运动方程中的附加质量阵，附加阻尼阵和附加刚度阵来等效。

This method takes account of the signal's properties of statistical distribution and wavelet space time-frequency distribution.

在第八章给出了应用实例，能有效分离倍频机械信号，和水力脉动的低频信号，为故障诊断提供依据。

When the internal pressure of liquid, which dropped below the liquid at that temperature the saturation vapor pressure at the local area or the formation of steam bubble point; and stress at elevated places around the bubble suddenly breaking pressure, flow due to inertia to high speed to the center of bubble extrusion, hydraulic shock caused by the equipment.

当液体内部压力下降，低于液体在该温度下的饱和蒸汽压时，在局部区域形成汽泡或汽穴；而在压力升高的地方汽泡突然被四周的压力压破，液流因惯性以极高的速度向汽泡的中心挤压，对设备造成水力冲击。

By high concentration of ozone-affected areas to expand Solution: To conserve electricity = pick off Save gasoline consumption = walk, go out more on public transport Cut = research and development of clean non-polluting energy sources such as solar, geothermal, wind, hydro Green prescription = to stop logging, cultivating a large number of plants

受高浓度臭氧影响地区扩大解决方法：节约用电=随手关灯节省汽油的消耗量=步行、出门多搭乘公共交通工具开源节流=研究开发洁净无污染的能源，如太阳能、地热、风力、水力绿色处方=停止伐木、大量培养植物是1997年12月在日本京都由联合国气候变化框架公约参加国三次会议制定的。

The damage caused by Cl in strawberry was less than that of Na~+ and Ca~+ far away.3.Membrane damage in root and leaf of strawberry was relief by Ca(NO_3)_2,CaCl_2 and Ca_2 treatment under NaCl stress, while leaf holding ability and chlorophyll content was enhanced, growth was improved and the biomass increased.

低浓度Ca(NO_3)_2、CaCl_2和Ca_2作为外源钙均能减轻NaCl胁迫对草莓成株根系和叶片的膜伤害，提高叶片保水力和叶绿素含量，改善草莓的生长状况，提高生物产量。

The differences in thethermalhydraulic behaviour of the two types of fuel channels have beenrevealed by subchannel analysis.

论文用COBRA程序对装载旧钍燃料和新钍燃料的燃料通道进行子通道分析，揭示了在这两种情况下通道热工水力情况的不同。

The moisture and salinization movement mathematical model in the field under subdrainage condition is based on the assumption of neglecting the effects of horizontal hydraulic gradient,It can analogy the changes of soil water content and salinization which are changed with times and depth.

论文在忽略水平方向水力梯度影响的假定下建立了排水条件下麦田水盐运移模型，模拟土壤水盐含量随时间、空间的变化情况。

Based on hf=λL/DV2/2g,formulain the form of hf= K1·F has beenderived for the hydraulic gradient lines of laterals of subirrigation systems. The formula is also applicable to that of a drip irrigation system. Anotherformula,based on Chezy's V=C RS,in the from of Hf=K2IQ2·F2 has been worked out for the laterals of sprinkler systems.

本文运用管道水动力学原理，对喷灌、滴灌、渗灌系统灌水支管的水力坡降线导出表达的理论公式，讨论其调控的可能途径，为试验研究这类系统的规划设计问题从原理上提供一个分析方法。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。