波动压力

It was found that with the increase in the oscillating frequency for a fixed oscillating angle, the film thickness increases, which may contribute to the formation of the oil film; however, the maximum pressure and the pressure scope during an oscillation cycle also increase; which may shorten the fatigue life of the bounding surface in the latter situation.

结果表明：在摆程不变的条件下，膜厚随摆动频率增加而增大，有利于润滑膜的建立，但同时会增加1个周期中的最大压力及压力波动幅度，使工件易于疲劳；对于相同凸度量，在低频摆动工况下边缘效应较高频工况下的严重，因此在低频摆动工况下使用滚子设计时需要增大其凸度量。

The friction performances of carbon face were investigated with an inertia friction tester. The torque curve of carbon face was ideal, the coefficient of static friction was lower than that of dynamic in 0.28 MPa, the friction coefficient of static and dynamic decreased with the braking pressure increasing. To the fiber face, the coefficient of dynamic friction of carbon face was more stable in cycle braking process, the wear rate was lower, and it was efficient to protect the couple plate not to be worn.

结果表明：碳质层的摩擦力矩在制动初期上升较快，中间过渡区平稳，尾部翘起较小；在制动压力小于0.28 MPa时静摩擦系数小于动摩擦系数，且动、静摩擦系数均随制动压力增加而减小；相对纤维层而言，采用碳质层摩擦时摩擦力矩曲线形态更好，连续制动时摩擦系数波动较小，磨损率低且能够有效保护偶件，是1种静/动摩擦系数比较低且适用于高载荷工况条件下使用的摩擦材料。

The friction performances of carbon face were investigated with an inertia friction tester.The torque curve of carbon face was ideal,the coefficient of static friction was lower than that of dynamic in 0.28 MPa,the friction coefficient of static and dynamic decreased with the braking pressure increasing.To the fiber face,the coefficient of dynamic fric...

结果表明：碳质层的摩擦力矩在制动初期上升较快，中间过渡区平稳，尾部翘起较小；在制动压力小于0.28 MPa时静摩擦系数小于动摩擦系数，且动、静摩擦系数均随制动压力增加而减小；相对纤维层而言，采用碳质层摩擦时摩擦力矩曲线形态更好，连续制动时摩擦系数波动较小，磨损率低且能够有效保护偶件，是1种静/动摩擦系数比较低且适用于高载荷工况条件下使用的摩擦材料。

This paper introduces the generating mechanism, theoretical calculation and lab test of self-excited wave.

介绍了自激压力波产生的机理、理论计算及室内试验情况，自激压力波频率小、幅值大，可对油层产生连续波动作用。

The sparger alleviates the drastic degree of the steam condensation, and greatly shorten the time of pressure equilibrium needed.

PRZ初始压力越大，蒸汽射流的速度越高，形成的汽穴的深度越深，液面波动的越剧烈，压力平衡需要的时间越长，其热水层厚度增加。

The process of frequency fluctuation in the hydropower station with surge tank is impacted both by high-frequency water pressure wave and low-frequency water level fluctuation in surge tank.

在负荷变化和扰动过程中，设调压室水电站机组频率受到压力管道内水击压力波和调压室内水位波动的共同作用。

From the extruder materials in the suction into two gears, and full of a space, with the rotation of the tooth in the shell movement, finally two teeth mesh when eduction.

齿轮泵由一个独立的电机驱动，可有效地阻断上游的压力脉动及流量波动。在齿轮泵出口处的压力脉动可以控制在1％以内。

This paper analyses mechanics property of horizontal press winding adopted on warping machine, develops the law of warp beam pressure and puts forward the way to reduce the motion between the roller and warp beam.

分析了整经机水平轨道式加压卷绕机构的力学特性，通过计算得出了经轴正压力的变化规律，提出了降低滚筒与经轴间压力最大波动幅度的措施。

Lever Ball Float Steam Traps biggest advantage is not subject to pressure,temperature,cooling water flow fluctuations,continuous drainage,a water that row,the minimum cooling degree 0℃,能使best efficiency heating equipment;lever float steam trap valve seat total in the following level,forming awater seal,no steam leakage;itsPlug Valves minimum working pressure 0.01Mpa,the maximum back pressure rate of≤85%;interior with exhaust,lever float steam traps use the most advanced components as the automatic emptying of diaphragm valves,can automatically exclude non-condensing gas,very sensitive,high quality work and long service life.

杠杆浮球式蒸汽疏水阀的最大优点是不受压力、温度、冷凝水流量波动的影响，连续排水，有水即排，最小过冷度为0℃，能使加热设备达到最佳工作效率；杠杆浮球式蒸汽疏水阀的阀座总处于液位以下，形成水封，无蒸汽泄漏；它的最低工作压力0.01Mpa，最大背压率≤85%；内部带有排气装置，杠杆浮球式蒸汽疏水阀采用最先进的膜盒元件做为自动排空气阀，能自动排除不凝结气体，非常灵敏，工作质量高，使用寿命长。

Results show that load change has evident effect on pressure and flow rate of operation orifice of pilot valve, and pressure value of operation orifice should fluctuate in a biggish range as design pilot valve.

分析表明，负载的变化对先导阀的出口压力和流量影响较大，设计先导阀时，工作口压力的波动值应在一个较大的范围内综合考虑。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。