查询词典 back pressure

With import pressure relief valves, pilot vavel disc role in the fluid pressure Fx attendant increase, when more than equal to Fx Pt2, pilot valves valves mouth opened, the pressure relief valves to import oil by damping hole, Pilot valves valves mouth overflow relief valves to export, and then back to the fuel tank.

随着溢流阀的进口压力增大，作用在先导阀芯上的液压力Fx随之增大，当Fx大于等于Pt2时，先导阀阀口开启，溢流阀的进口压力油经阻尼孔、先导阀阀口溢流到溢流阀的出口，然后回油箱。

With import pressure relief valves, pilot vavel disc role in the fluid pressure Fx attendant increase, when more than equal to Fx Pt2, pilot valvesvalves mouth opened, the pressure relief valves to import oil by damping hole, Pilot valves valves mouth overflow relief valves to export, and then back to the fuel tank.

随着溢流阀的进口压力增大，作用在先导阀芯上的液压力Fx随之增大，当Fx大于等于Pt2时，先导阀阀口开启，溢流阀的进口压力油经阻尼孔、先导阀阀口溢流到溢流阀的出口，然后回油箱。

Rotate the handle to a certain position, so that the distance between the nozzle baffle within the scope of work, pressure reducing valve to enter the work state of the pressure chamber 5 with the nozzle and the decrease of distance between baffle increases, so promoting the spool, Open the intake valve port 9, that is, air flow to exit the same time, through the pore back to the previous chamber 4, with the pressure regulator spring balance.

将手柄旋转到一定位置，使喷嘴挡板的距离在工作范围内，减压阀就进入工作状态中气室5的压力随喷嘴与挡板间距离的减小而增大，于是推动阀芯，打开进气阀口9，即有气流流到出口，同时，经孔道反馈到上气室4，与调压弹簧相平衡。

My company produces the machine selling cement building a piece , hydraulic pressure shakes brick machine , full-automatic building-block machine , the concrete builds piece molding machine , disheartened baking-free brick of fine coal machine , pressure ball machine , Ramon dawdles away , Ramon flour mill , Ramon machine , R type Ramon dawdle away , make grit machine, ball mill, crusher, building stones production line equipment, broken stone machine, wood powder machine, oscillating screen, ring hammer dyadic crusher, clear grit machine, drying machinery, high pressure Ramon super-thin flour mill, Machinery equipment such as ball mill accessory , the crusher striking back against style , honeycomb coal ball machine.

我公司生产销售水泥砌块机、液压振动砖机、全自动空心砌块机、混凝土砌块成型机、粉煤灰免烧砖机、制砖机、压砖机、挤砖机、振式制砖机、多功能制砖机、液压式制砖机、花砖机、路面花砖机、彩色花砖机、盲人道花砖机，压球机、蜂窝煤球机、雷蒙磨、雷蒙磨粉机、雷蒙机、R型雷蒙磨、制砂机、球磨机、破碎机、石料生产线设备、破石机、木粉机、振动筛、环锤式破碎机、洗砂机、烘干机、高压雷蒙超细磨粉机、球磨机配件、反击式破碎机，粮油机械、蔬菜脱水成套设备、玉米糁加工机械、粗粮细加工、玉米精加工微型机组、玉米高精粉微型机组等机械设备。

The assembly of journal and plain bearing liner space is too little, force of organic still oil pressure is small it is the crucial index that affects lubricant result, make lubricate because of lacking engine oil between crankshaft and plain bearing liner and bite dead invalidation, include to be pulled badly, lack lube, layer of alloy of dry attrition generation is fused, grind sliding surface to did not maintain the oily film of certain ply, and all sorts of local overload exhaustion are destroyed, cavitation erosion and V form are destroyed etc, through technology of him director diesel locomotive old experience reachs the analysis of pair of its breakdown reasons, put forward precautionary measures especially. As a result of,the burns caustic mechanism plain bearing liner to burn caustic mechanism of 1 plain bearing liner is the lube film burst between journal and plain bearing liner, cause plain bearing liner and crankshaft generation clash, below high temperature, high pressure and high rotate speed, the wear-resisting alloy layer of plain bearing liner wears away prematurely or fuse, cause plain bearing liner and crankshaft to stick thereby bite, can make the steel back of plain bearing liner and Kong Zhong produces whirligig, inlet port is jammed, carry on the back by steel again with the friction of aperture causes high temperature to make plain bearing liner burned-out further, can cause bolt to break off, happen swing a malign accident that pounds cylinder body of bad internal-combustion engine.

轴颈和轴瓦的装配间隙太小，还有机油压力低是影响润滑效果的关键指标，使得曲轴和轴瓦之间因缺少机油润滑而咬死失效，包括严重拉伤，缺少润滑油，干摩擦产生合金层熔化，磨滑面没有保持一定厚度的油膜，以及各种局部过载疲惫破坏，气蚀和V形破坏等，通过本人主管内燃机车技术多年经验及对其故障原因的分析，特提出预防办法。1轴瓦的烧损机理轴瓦烧损的机理是由于轴颈和轴瓦之间的润滑油膜破裂，导致轴瓦和曲轴产生摩擦，在高温、高压和高转速下，轴瓦的耐磨合金层过早地磨损或熔化，从而引起轴瓦和曲轴粘咬，会使轴瓦的钢背和座孔中产生旋转运动，进油孔被堵塞，再由钢背和座孔的磨擦进一步引起高温使轴瓦烧坏，并会造成螺栓折断，发生甩出捣坏内燃机缸体的恶性事故。

When the flow rate through the Poppet head reaches a certain size, balance piston upper and lower chamber of the two oil pressure difference will create upward hydraulic pressure exceeds the spring preload and balanced piston friction and balance the sum of the piston weight and other forces, balance piston upward, so that the pressure port and overflow port interlinked, a large number of pressure from the oil will flow back into the fuel tank from the overflow port.

当通过提动头的流量达到一定大小时，平衡活塞上、下两腔的油压力差将形成向上的液压力超过弹簧的预紧力和平衡活塞的摩擦阻力及平衡活塞自重等力的总和，平衡活塞上移，使压力口和溢流口相通，大量压力油便由溢流口流回油箱。

The method of finite element discrete and optimal parameter back analysis is adopted.(3) Concentrated on the question of high external water pressure of the deep-lying tunnel, the basic theory and method calculating external water pressure are systematically studied.(4) Based on Jinping cascade 2 hydropower station, numerical simulation rain infiltration of seepage field under different drainage pattern and grouting pattern are studied, also, the high external water pressure is analyzed and studied and some seepage control measures are put forward.

2采用有限元离散—优化法进行参数的反演分析；(3)针对深埋隧洞的高外水压力问题，进一步分析和研究了衬砌水荷载及外水压力的作用机理和计算方法；(4)以锦屏二级水电站深埋长引水隧洞作为本文的主要研究对象，采用考虑降雨入渗渗流场分析的方法对排水方案和灌浆封堵方案不同情况下的渗流场的水头分布进行了数值模拟，并对其外水压力进行了分析和研究，提出了渗流控制的具体措施。

A front-back seal ring structure is adopted in the pump to prevent the liquid from leaking from the high-pressure area to the low-pressure area. The front seal ring is mounted on the pump body while the back seal ring mounted on the bearing body. They should be changed when they are so worn-out that they have an effect on the efficiency and self-priming performance of the pump after the operation for a long time.

泵内部防止液体由高压区向低压区泄漏的密封机构是前后密封环，前密封环装在泵体上，后密封环装在轴承体上，当泵经长期运转密封环磨损到一定程度，并影响到泵的效率和自吸性能时，应给予更换。

A front-back seal ring structure is adopted in the pump to prevent the liquid from leaking from the high-pressure area to the low-pressure area. The front seal ring is mounted on the pump body while the back seal ring mounted on the bearing body. They should be changed when they are so worn-out that they have an effect on the efficiencyself-priming performance of the pump after the operation for a long time.

泵内部防止液体由高压区向低压区泄漏的密封机构是前后密封环，前密封环装在泵体上，后密封环装在轴承体上，当泵经长期运转密封环磨损到一定程度，并影响到泵的效率和自吸性能时，应给予更换。

Turn it back on and set the box cover at the right, and then set the pumb output tubes and machine into the tubing connected, and then on the machine: the pumb work grow up immediately, and mold hold its output tube is also apparent from inside the pent up spilling in output occurred at both the reliability and vibration grow up; then view the instructions in the oil pressure table has been rising "" 0 to "" 5, at the same time, pressure relay (and by keeping the switchboard AC closing in — from its contact outgoing voltage) order lubrication solenoid valve work of fuel, oil pressure decreased and quickly rose to require lubrication with pressure-a solenoid valve, so self-repeating.

重陈不兵其拧不松并不兵盒盖上好，再不兵油泵输入惯与机械的不退油惯接开，然后试机：油泵处事的声音当即变不小了，且用手捏握其输入惯也暗显感触边面流油的鼓胀度和震不不静度均变不小了；再不雅油压外洋的辅导已由&0&逐步上降到了&5&，与此同时，不张力继电器不不静息（并开功使配电柜内互换隔绝器呼分——由其触不面传不入电压）令润滑电磁阀处事——放油，油压回降后又迅不缓上降至规矩不张力后再令润滑电磁阀放油，如此轮回来往。

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。