The Cd increased with the depth-width ratio of notch cross-section, and increased to some extent with the hydraulic diameter of notch cross-section.
流量系数随矩形节流槽截面深宽比增大而增大，并随截面水力直径增大而有所增大。
A pretension method for major diameter bolts using hydraulic stretching equipment is introduced.
介绍了一种大直径螺栓的预紧方法液压拉伸预紧法。
In addition, the company's hydraulic motors will drive 32 special tires that contact the 648-foot diameter wheel, making it rotate at a constant speed of three times an hour.
此外，该公司的液压马达将带动32条特制轮箍，而这些轮箍连接到这个直径为648英尺高的摩天轮，使其以每小时旋转三次的匀速旋转。
Hydraulic Stretching Equipment is a advanced tools for bolts' pretension and disassembly, it is widely used in the pretension of major - diameter bolts.
液压拉伸器是一种先进的螺栓预紧和拆卸工具，己广泛用于大直径螺栓的预紧。
Large-diameter hydraulic cylinders, normally retracted, force the two halves of the cover together in the middle to seal the wellbore.
大直径的液压缸，通常是收缩，迫使闸板的两半一起向中间运动去密封井眼。
Through anchors identified by the work pressure, intensity degree, reasonable terms, choiced piston confined area and the size of hydraulic tank diameter.
通过对退锚器工作压力的确定、强度校核、合理计算，选择了活塞承压面积及各液压缸直径尺寸。
This paper deals with the physical characteristics of the transient of flow parameters in hydraulic system when fluid flows through pipe junction with different diameter.
本文分析研究了液压系统中液流在连接不同直径管道的装置处，流动参数发生瞬变的物理特征。
By test and analysis, the direct reasons leading to failures are the defaults in designing coiler mandrel diameter change and controlling hydraulic system program but not the system parts themselves.
通过测试与分析，排除了液压系统元件本身的问题，认为卷筒变径设计缺陷和液压系统程序控制缺陷是故障产生的直接原因。
As an example of DWX35 single hydraulic prop with cylinder diameter 100mm, the effects of the system parameters on the dynamic stability of the hydraulic prop are discussed.
以缸径为100的DWX35型的单体液压支柱为例，讨论了系统参数对支柱动力稳定性的影响。
It can obviously decrease the press of the system in the situation of the output force and the diameter of the hydraulic cylinder is limited.
在输出力及液压缸直径一定的条件下，能显著降低系统的压力。
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。
Obtaines optimal cleaning parameters like length, diameter of flush water outfall, air pressure, hydraulic pressure of different diameter pipelines.
获得了针对不同口径干线的最佳冲洗长度、排污口直径、最佳脉冲气压和水压等冲洗参数。
The result shows that the punch-force increases with the increasing of the hydraulic pressure, the punch diameter and the thickness of the tube.
结果表明：管内液体压力增加、冲头直径增加、 材料壁厚增加都会使冲头推力增大；
This paper carried on experimental a research of the factor which influences the same column diameter of the turbid water hydraulic power separation device.
对影响同一柱体直径浑水水力分离清水装置分离性能的因素进行了试验研究。
Mathematical model is constructed by hydraulic analysis to evaluate the most economic pipeline diameter parameter.
通过水力学分析建立数学模型，求解最经济的管径参数。
Combined with force amplifier mechanism and hydraulic transmission technology, when output force and hydraulic cylinder's diameter are limited it can decrease system pressure;
利用机械增力机构的力放大作用，与液压传动技术相结合，在输出力及液压缸直径一定的条件下，能显著降低系统压力；
The simulation results show that, the extension of priority valve cracking time, shortening tube length and increasing tube diameter will be helpful to reduce the hydraulic impact.
仿真结果表明，通过增大优先阀开启时间，适当缩短管路长度和增大管径能够有效降低液压系统的液压冲击现象。
In this paper, the difficulties, which appear in the processing of big diameter blind holes in hydraulic oil tank case, are analyzed.
分析了液压油箱壳体大盲孔的加工难点，介绍了硬质阳极化后光整加工大盲孔的工艺方法及取得的技术经济效果。
In this paper, the difficulties, which appear in the processing of big diameter blind holes in hydraulic oil tank case, are analyzed.
分析了液压油箱壳体大盲孔的加工难点，介绍了硬质阳极化后光整加工大盲孔的工艺方法及取得的技术经济效果。
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