查询词典 hydraulic

The pipe string includes double hydraulic cylinder with anchorage packer、double hydraulic cylinder without anchorage packer、releasing tool、reversing valve and centralizer.

胜利油田目前采用的常规换层采油管柱工作寿命短，且需多次起下管柱实现换层，施工程序复杂，作业成本高。

Water hydraulic valve was the key component of water hydraulic technology.

纯水液压控制阀是纯水液压技术的关键基础件。

Hydraulic counterbalance valve is a key element in the hydraulic balanced loop , which is applied abroad in modern engineering mechanism especially in elevating machinery.

液压平衡阀是平衡回路中的关键元件，在现代工程机械特别是起重运输机械中应用广泛。

Also, the hydraulic actuator and the hydraulic control valve are formed integrally with each other in the valve housing body.

还有，在阀外壳主体内一体设置所述油压促动器和油压控制阀。

Company covers an area of 6900 square meters, is a design, development, manufacture, sales and service in one car from our series products, hydraulic valve series, oil pump gear products, self-suction pump sprinkler products and related to the professional company of hydraulic components.

公司占地面积6900平方米，是一家集设计、开发、制造、销售、服务于一体的汽车取力器系列产品，液压阀系列产品，油罐车齿轮油泵产品，洒水车自吸式水泵产品及相关的液压部件的专业公司。

The model of a hydraulic system composed of fluid resistance, fluid capacitance and on/off valve is analyzed. Dynamic model considering fluid resistance and fluid capacitance are set up for on/off valve. Bloc diagram of simulation modules of the hydraulic system is worked out with Matlab/Simulink. The system is simulated through different parameter settings. Influences of fluid resistance and fluid capacitance on flow characteristics of on/off valve are qualitatively analyzed.

对液阻、液容和关阀组成的液压系统进行模型分析，建立了考虑液阻、液容的开关阀动态模型，并利用Matlab/Simulink建立了液压系统仿真模块图，通过设置不同参数对开关阀液压系统进行仿真，定性地分析了液阻、液容对开关阀流量特性的影响。

Because of the particularity of this system and the complexity of the hydraulic phenomena of unsteady flow, it is essential to research its hydraulic transients in order to provide scientific basis for this type power station design.

鉴于跨流域引水水电站引水发电系统所具有的特殊性和引水发电系统非恒定流水力现象的复杂性，有必要对其进行水力过渡过程研究，为该类型电站设计提供科学依据。

Through hydraulic calculation, determines and tests mean friction resistance of riser and horizontal branch circuit of new two-pipe heating system, provides reference for its hydraulic design calculation.

本文分析了新双管系统与传统双管系统的不同，提出了确定新双管系统平均比摩阻联值的方法，并通过水力计算，确定并验证了新双管系统中立管与水平支路的平均比摩阻的取值，为新双管系统水力设计计算提供参考。

It proves that tree top leaves suffer from water stress and hydraulic limitation becomes greater with tree height.Water stress influence tree height growth in several aspects:firstly is the influence of exterior water condition,and community average tree height is positive with exterior water condition.Secondly, hydraulic limitation influences individual tree structure and function.Xeromorphic structure,Lower water potential and turgor pressure limit cell division and expansion,which restrict gas exchange and carbon assimilation capability.However,respiration consumption increases with the spread of tree crown.Shortage of nutrient limits carbon investigation on new leave growth and may ultimately limit tree growth.Thus,the main limitation of tree height is water.

水分对树高生长的限制首先是外在的水分状况，群落的总体高度随外界水分状况的变差而变矮；再就是水力限制对单株树木的结构和功能的影响，水势降低、膨压减小使细胞的分裂和扩展受限，旱生型结构加剧水力对气体交换能力的限制、使光合碳同化能力受到限制、而呼吸消耗却随着树木个体的增大而增大，制造营养物质不足、使得营养亏缺、造成投入新枝叶的营养受限，最终限制了树高继续增长。

Taking YFD hydraulic profiling tool carrier for example,computer dynamics simulation on transition process of hydraulic servo system has been completed with power bond graph and space-state method in this paper.

以YFD型液压仿形刀架为例，利用键合图和状态空间法对液压伺服系统的过渡过程进行了计算机数字仿真，为伺服系统动态过程的理论分析研究及系统设计阶段的动态预测提供了依据。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷