The sealing of the hydraulic head is very reliable due to its hard sealing design.
液力端采用硬密封结构，密封可靠性好。
Fluids flow down a hydraulic gradient, from points of higher to lower hydraulic head.
流体向水力梯度下游的流动是从水力压头较高处到水力压头较低处。
It also proposes an empirical formula for computing the relative hydraulic head at downstream of the grout curtain for infinitely deep homogeneous foundation.
并建立了均质无限深坝基帷幕后的相对水头值的经验公式。
While groundwater flows through an unconfined aquifer due to heterogeneity, the vertical average saturated hydraulic conductivity is a function of hydraulic head.
地下水流于非拘限含水层流动时，因含水层之非均质性，使得垂直平均之饱和水力传导系数随地下水水位高低而变化。
Principle of negative hydraulic head and multi-pore materials were used to put forward a new setup and method for the measurement of soil-water characteristic curve.
负水头控制原理与多孔膜材料相结合提供了一种测定土壤水分特征曲线的新装置和新方法。
Comparatively, with the reducing of shrinkage ratio of slit, the shock loads of receiving pool reduce, but the critical hydraulic head that just can cause deflecting heightens simultaneously.
相对而言，随着窄缝收缩比的减小，水垫塘冲击荷载略有减小，但同时起挑水头增加。
Based on the analysis of hydraulic theory and experimental data obtained by author, it is confirmed that Chevielev's formula can be used for computing the hydraulic head loss of plastic tubes.
在理论分析和实测资料的基础上，作者肯定了谢维·列夫公式能用来分析和计算塑料管的水头损失。
Negatively pressurized irrigation (NPI) method, a newly irrigation technology, in which the elevation of the emitters is higher than that of the water source, runs under negative hydraulic head.
负压灌溉法是一种新近提出的节水灌溉技术，灌溉时供水水头为“负值”，即灌溉水源高程低于灌水器高程。
For treatment plants which have additional upstream hydraulic head available, the operating water level can be raised and the shaft bearings can then be mounted directly to the top of the tank walls.
这促使轴，对于具有额外的上游水力头的污水处理厂，可以提高运行污水水平，然后直接将轴轴承提高到池壁顶端。
This paper studied liquid steel flow property in mould of super low head slab CC with hydraulic model and mathematics model.
本文应用水力学及数学模型的方法研究了超低头板坯连铸结晶器内钢水流动特征。
The use of hydraulic cylinder in hydraulic elevator, the part usually has five parts: piston and piston rod, cylinder and cylinder head, buffer device, sealing device and exhaust device.
液压升降机中使用的液压油缸，其组成部分通常有五部分：活塞和活塞杆、缸筒和缸盖、缓冲装置、密封装置、排气装置。
The flow regime, sediment deposition and the loss of head of two head tanks of the sewage pumping station with different dimensions are studied by using a hydraulic model test method.
采用水力模拟的方法对两个不同结构尺寸的污水泵站高位井的水流流态、泥沙淤积及水头损失等进行了模型试验。
According to hydraulic principle, the change of efficient water head, discharge coefficient and discharge of orifice along porous pipes have been discussed and checked by experiments in this paper.
运用水力学原理，对多孔配水管孔口出流量公式的孔口作用水头、孔口流量系数及沿程孔口出流量的变化问题进行了理论分析和试验验证。
Mould adjustment system is drive by hydraulic controlled gear transmission, which is easy for operation and can keep parallelity between head plate and middle platen.
液压控制齿轮调模装置，操作简单，稳定保持头板及中板之平行度；
The basic equations describing unsteady flow in lock manifold are derived, in which various hydraulic loss and inertia head of culvert and ports are included.
在考虑了阀门井水流、各水头损失及廊道和支孔惯性长度的影响之后，推导了船闸廊道复合管非稳定流的基本方程组。
This paper describe a new technique that using a new power head driven dy electric hydraulic replaces the old one by steam power.
本文用实例介绍了将以蒸汽为动力的驱动部分去掉，代之以电动液压驱动的动力头技术。
The mathematical model, the method for optimizing design, and the design principle of hydraulic parameters are proposed to make head-flow curve flat.
流量曲线特点，提出了旋喷泵叶轮的优化设计数学模型、叶轮优化设计方法及水力参数的设计原则。
The nominal head was presented for preliminary selection of hydraulic models, with consideration of the efficiency and reliability at all operation conditions.
为了兼顾各种特征扬程工况下的运行效率和可靠性，在水力模型初选阶段提出了选型名义扬程的概念。
It is composed of open type engine body, hydraulic power cylinder, upper pressure head, and lower type box. The type box can be collocated with manual four-positions renewal.
有开式机身、液压动力缸、上压头、下字盒等组成。下字盒可配手动四位根据用户要求更换。
The basic thought, the action principle and hydraulic system on half - automatic machine design for flaring and necking tube head are introduced briefly.
对管端扩、缩径半自动专机的设计基本思路、动作原理、液压系统进行了简要介绍。
Model KDS-115 hydraulic releasing tool is developed, which solves the problem of torque transfer by designing a claw-groove structure between the upper sub and fishing head.
针对这种情况，研制出KDS— 115型液压丢手工具。 该型工具通过设置上接头与打捞头之间的凸爪凹槽结构，解决了以往丢手工具不能传递扭矩的问题；
The drive system is refitted from the tong head of Q10Y-M hydro-air tong and uses the hydraulic power supply of the tong.
传动系统用Q10Y-M液气大钳钳头改造而成，并采用大钳的液压动力源。
The mathematical model of hydraulic regime of ring-shaped heat-supply network is established, and the pressure head check formula for quota heating is given.
建立了环状管网水力工况的数学模型，给出限额供热的压头校核公式。
Use of hydraulic, hydraulic single is currently the head punch products, steel punches.
羧采用液压传动，是目前国内液压单头冲孔机最新产品， 能对板钢冲孔。
The paper introduces the main functional design of a kind of small cutting coal machine with hydraulic fork lift as feed power and chain-saw cutting knives driven by generator as working head.
论述了一种利用液力叉车作为进给动力，由电机驱动链锯式割刀作为工作头的小型立式割煤机的主要性能设计。
Building of hydraulic tunnels with high head and large diameter increase gradually, and the underground reinforced concrete branch pipe is adopted in more and more projects.
相应的高水头大直径水工压力隧洞的建设也逐渐增多。并且越来越多的工程采用地下钢筋混凝土岔管。
With the model, many parameters can be obtained such as water head, equivalent mechanical fissure width, seepage coefficient, and hydraulic gradient etc.
应用该模型可计算出二维裂隙网络中任意交点（内结点）的水头、等效水力隙宽、渗透系数、水力梯度等参数。
With the model, many parameters can be obtained such as water head, equivalent mechanical fissure width, seepage coefficient, and hydraulic gradient etc.
应用该模型可计算出二维裂隙网络中任意交点（内结点）的水头、等效水力隙宽、渗透系数、水力梯度等参数。
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