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1、液压传动hydraulictransmission能源装置 energy portion控制装置 control element执行装置 actuator portion辅助装置 accessory element效率efficiency旋转方向directionofrotation背压backpressure系统压力systempressure吸入压力suctionpressure额定压力ratedpressure耗气量airconsumption泄漏leakage内泄漏internalleakage外泄漏externalleakage层流laminarflow紊流turbulentflow
2、气穴cavitation气蚀cavitation erosion真空度Vacuum标准大气压 standard atmospheric pressure绝对压力 absolute pressure额定压力 rated pressure公称压力 Nominal pressure工作压力 working pressure背压 back pressure薄壁小孔 Thin wall orifice短孔 Stubby orifice细长孔 slot orifice连续性方程equation of continuity伯努利方程Bernoulli Equation动量方程Equation of mome
3、ntum外负载outside load 流量 flow rate流量flowrate额定流量ratedflow流量系数flowerfactor图形符号graphicalsymbol回路图circuitdiagram定量泵：Fixed displacement pump变量泵variabledisplacementpump定量马达Fixed displacement motor齿轮泵gearpump叶片泵vanepump单作用叶片泵 single-acting vane pumps; 双作用叶片泵 double-acting vane pumps,柱塞泵pistonpump轴向柱塞泵axialp
4、istonpump液压马达hydraulicmotor吸入压力 suction pressure排量 capacity几何排量geometric capacity顺时针clockwise逆时针anticlockwise泄漏 leakage输入功率：input power输出功率：Output power输出转矩：output torque理论转矩 Theoretical torque缸cylinder有杆端rodend无杆端rearend工作行程workingstroke负载压力inducedpressure输出力force单作用缸single-actingcylinder双作用缸double
5、-actingcylinder差动缸differentialcylinder伸缩缸telescopiccylinder阀valve单向阀checkvalve液控单向阀pilot-Operated checkvalve溢流阀reliefvalve限压 limit pressure稳压adjusting pressure or regulating pressure顺序阀sequencevalve减压阀pressurereducingvalve平衡阀counterbalancevalve压力控制阀（pressurevalve）、流量控制阀（flowvalve）方向控制阀（directionalva
6、lve）先导阀Pilotvalve液控单向阀Pilotoperatedcheckvalve卸荷阀unloadingvalve直动式directlyoperatedtype先导式pilot-operatedtype手动式manuallyoperatedtype液控式hydrauliccontrolledtype流量控制阀flowcontrolvalve单向节流阀 Throttlevalve with checkvalve节流阀Throttlevalve调速阀speedregulatorvalve传递函数transferfunction管路flowline工作管路workingline回油管路re
7、turnline控制管路pilotline泄油管路drainline弯头elbow油箱容量reservoirfluidcapacity气囊式蓄能器bladderaccumulator空气过滤器airfilter油雾气lubricator热交换器heatexchanger冷却器cooler加热器heater压力开关pressureswitch压力控制回路pressurecontrolcircuit安全回路safetycircuit差动回路differentialcircuit调速回路flowcontrolcircuit进口节流回路meter-incircuit出口节流回路meter-outcircuit旁路节流回路 bleed-off circuit同步回路synchronizingcircuit方向控制回路（directionalvalvecontrol）安全回路（securitycontrol）定位回路（positioncontrol）同步回路（synchronisecircuit）顺序动作回路（sequeuntcircuit）液压泵（pump）液压辅件（accessory）
