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 pump flow and pressure head has nothing to do with the pump cylinder size, and the reciprocating frequency of the piston stroke.
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。
A two-stroke engine has no moving valves, and the spark plug fires each time the piston hits the top of its cycle.
在二冲程发动机中你必须混和燃料和气体，因为气缸壁上的孔阻止使用活塞环密封燃烧室。
You have to mix oil into the gas in a two-stroke engine because the holes in the cylinder wall prevent the use of rings to seal the combustion chamber.
转子活塞发动机用的是四冲程循环，但是它们和四冲程活塞发动机有很大不同。
Gas turbine engines use the Brayton cycle. Wankel rotary engines use the Otto cycle, but they do it in a very different way than four-stroke piston engines.
发动机完整的循环要求有活塞的四个冲程：进气、压缩、做功、排气。
The complete cycle of an engine requires four piston strokes: intake, compression power, and exhaust.
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。
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.
第二个冲程使得活塞向上运动。
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。
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.
四冲程发动机的工作循环是以活塞在上止点、进气门打开为开始的。
The cycle of operation of the four-stoke engine begins with the piston at TDC and the intake valve open.
飞机由一台360马力风冷、四冲程汽油活塞发动机提供动力。
The aircraft is powered by a 360hp air-cooled, four-stroke, petrol (gasoline) piston engine.
本文提出压缩冲程期间计算平顶活塞燃烧室流动特性摸拟的有限容积法。
This paper presents a finite-volume method for flow characteristics simulation in a combustion chamber with a flat-topped piston during the compression stroke.
活塞转而进入吸入冲程并向气缸内吸入新的混合气体。
The piston then descends on the induction stroke, and draws a fresh charge into the cylinder.
该电磁阀可进行连续工作。该222C阀还有一个短冲程水活塞用于作出快速反应和有自我清洁功能的双引导区域。
The valve is rated for continuous duty. 222c Valves have a short stroke water piston for fast response and dual guide areas have self-cleaning action.
ZTY2 65天然气压缩机是以二冲程发动机作为动力源的二级活塞式压缩机，针对此压缩机，本文作者研制了ZTY 2 65天然气压缩机动态压力测试系统。
This paper develops a dynamic pressure test system for ZTY265 natural gas compressor which is a two step piston type compressor and driven by two stroke internal combustion engines.
排气冲程随着活塞经过下止点并上行至上止点。
The exhaust stroke continues as the piston passes BDC and moves upward to past TDC.
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.
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。
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.
每当活塞改变一次运动方向时，它就完成了一个冲程。
The piston completes a stroke each time(that)it changes direction of motion.
此压缩机在线计算程序可计算从入口压力压缩到出口指定压力，在给定活塞直径、连杆直径、冲程长度和转速的情况下，压缩气体混合物所需的压缩机容量和功率。
Estimates capacity and power required for compressing a gas mixture from an Inlet pressure to Desired Outlet pressure for a given cylinder diameter, rod diameter, stroke length and RPM.
进气冲程在活塞位与气缸顶部（进气门开启，排气门关闭）时开始，在活塞到达其行程的底部时结束。
The intake stroke starts with the pistonat the top of the cylinder (intake valve open and exhaust valve closed) and stops with the pistonat the bottom of its travel.
进气冲程在活塞位与气缸顶部（进气门开启，排气门关闭）时开始，在活塞到达其行程的底部时结束。
The intake stroke starts with the pistonat the top of the cylinder (intake valve open and exhaust valve closed) and stops with the pistonat the bottom of its travel.
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