A two-stroke engine has no moving valves, and the spark plug fires each time the piston hits the top of its cycle.
二冲程发动机没有移动的阀，火花塞每次点火活塞到达循环顶端。
With the piston now at BDC and all the gases having been burnt, it is important to remove all the burnt gases from the cylinder on the fourth and final stroke of the cycle of operations.
随着活塞现在位于下止点且所有气体已经燃烧，重要的是要在工作循环的第四个即最后一个冲程中将所有的已燃废气从气缸中排出。
Reciprocating pump flow and pressure head has nothing to do with the pump cylinder size, and the reciprocating frequency of the piston stroke.
往复泵的流量与压头无关，与泵缸尺寸、活塞冲程及往复次数有关。
Reciprocating pumps convert rotary motion to linear motion. Pump speed in RPM determines the pumps output volume for any given combination of cylinder bore and piston stroke.
循环泵将曲轴旋转运动转化为柱塞的直线运动。泵速转每分钟决定了任何气缸和活塞组合的排泵量。
This paper by use of perturbation method found asymptotic periodic solution of piston stroke, and found rational periodic for periodic external force.
本文用摄动方法求得了活塞行程的渐近周期解，且为周期性外力求出合理的周期。
At the beginning of the third stroke of the cycle of operations, the piston is once again at TDC, the crankshaft having turned through one full revolution.
在工作循环的第三个冲程开始，活塞再次位于上止点，曲轴已经旋转了一整周。
Power stroke: As the fuel is compressed and the piston nears the top of the cylinder the spark plug fires and ignites the fuel and air.
作功行程：活塞处于汽缸中的上止点，火花塞点燃充分压缩后的混合气体。
The stroke is under the control of high-precision electronic caliper which can vary the stroke of screen piston precisely through corresponding control modules.
行程由高精度的电子尺来控制，通过相应的控制模块精确的控制滤网活塞的行程。
The priming mechanism (35) for the priming stroke is movable relative to the piston rod (11, 12) in the direction of propulsion (V).
为了预注行程，预注机构（35）相对于活塞杆（11，12）在驱前的方向（V）上可以移动。
When the piston reaches the bottom of the intake stroke, the intake valve closes, trapping the air-fuel mixture in the cylinder.
当活塞到达进气行程的下止点时，随着空气燃油的混合气进入气缸，进气门关闭。
Therefore, the design method of double elbow clamping mechanism and piston stroke is proposed, which is in favour of working steady and reliability of injection moulding machine.
进而提出利于注塑机工作平稳的双肘锁模机构和活塞行程的设计方法。
The Bore is the diameter of the cylinder. The stroke is the distance the piston travels from BDC (Bottom dead center) to TDC (top dead center). The Bore is always mentioned first.
内径指的是气缸的直径；行程是活塞从下止点运行到上止点的距离。表述时，内径总是写在前面。
Finally, GLIDE software is used for analysis of the movement and force of the piston after increasing the stroke, summarizing the operation situation of the piston and cylinder liner.
最后还利用GLIDE软件对活塞在冲程加大后的运动及受力进行了模拟分析，简要的概括了行程加大后活塞和缸套的工作状况。
The flow volume per stroke of each chamber is determined by the lateral stroke of the entire piston assembly and also by the annular areas of the proximal and distal ends of the piston.
各腔室在一个行程下的流体积由整个活塞组件的侧向行程和活塞的近端和远端的环形区域决定。
The size of the steel tube is lengthened by the following needed size in comparison with the piston stroke.
钢管尺寸比活塞行程加长以下需用尺寸。
In the 4-stroke engine, four strokes of the piston in the cylinder are required to complete one full operating cycle.
在四冲程发动机，四冲程汽缸中的活塞需要完成一个工作循环。
In the 4-stroke engine, four strokes of the piston in the cylinder are required to complete one full operating cycle.
在四冲程发动机，四冲程汽缸中的活塞需要完成一个工作循环。
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