Hydraulic fluid power - cylinders - housings for piston and rod seals in reciprocating applications - dimensions and tolerances 液压气动缸.往复运动用活塞和活塞杆密封腔的尺寸和公差
Basic silicones for industrial use . determination of gel time at a given temperature . method using automatic equipment with alternate motion 工业用基础硅塑料.在规定温度下胶凝时间的测定.自动往复运动设备法
The crankshaft , in conjunction with the connecting rod , converts the reciprocating motion of the piston to the rotary motion needed to drive the vehicle 曲轴，和连杆一起，把活塞的往复运动转化为驾驶车辆需要的旋转运动。
In this paper , a real - time measuring and testing system based on virtual instruments ( vi ) for reciprocating friction & wear experiment is proposed 本文在研究了减振器往复运动特点的基础上，提出并研究了基于虚拟仪器的往复式摩擦磨损试验实时测试系统。
In a gas outfit of an automobile , the rocker arm insert and the valve rod form frictional mates that move back and forth , so their working conditions are complicated and bad 汽车发动机配气机构中的摇臂与气门杆构成往复运动的摩擦副，服役条件复杂而恶劣。
Its essential idea is to prevent structures from accumulation of dynamic responses by means of limiting the potential crossing velocities at the zero position to seclude every to - and - fro motion circle as possible 本文提出了一个离复位控制策略，核心思想是限制结构零位置穿越速度以尽可能孤立每个往复运动，防止动力效应的累积。
Electrohydraulic push rod drives the two - way pump to output pressure oil with rotation of motor clockwise and counter - clockwise , by control of hydraulic valve , send to the hydraulic cylinder , to achieve the reciprocating movement of the piston rod 电液推杆以电动机正反转，带动双向泵输出压力油，经液压阀控制，送至液压缸，实现活塞杆的往复运动。
For improvement of effectivity and reduction as much as possible of reciprocaing motion stroke o f oil press , amplifier - mechanism of distance has been applied to structure adde d hence realization of speed autotransmitting 为了能提高效率，让油压机往复运动行程尽量缩短，模具结构中采用了增距放大机构并分析了实际应用中出现的误差，增加了可调结构,可完全实现快速自动上下料。
The metallographic sample cutting machine is mainly used to inspect the quality of production and research material science , the step motor , which status influences the quality of the metallographic sample , is the key component to make the moving mechanism run 自动金相试样切割机是用于产品质量检验和材料科学研究的专用设备，步进电机是驱动往复运动机构的关键部件，它的运行状况很大程度上影响切割金相试样的质量。
Aim of this study was to meet the need for development of tribological parts in pumps . at room temperature tribological properties of different sliding pairs of silicon carbide and alumina - based ceramics were tested using a laboratory tribometer in the ring - on - plate geometry under reciprocating sliding linear contact in different media , such as distilled water , aggressive media and air 本文针对目前泵用摩擦零部件材料发展的需要，在实验室摩擦磨损试验机上研究了按环/块线接触方式作往复运动条件下的碳化硅和氧化铝基陶瓷材料摩擦副在水、化学腐蚀性介质作润滑剂和无润滑时室温下的摩擦磨损特性。
