Four-stroke-cycle Engine 四行程引擎
two stroke cycle engine 二冲程发动机 ; 二冲程引擎
two-stroke cycle engine 两冲程内燃机工作过程 ; 二冲程引擎
four-stroke cycle engine 四冲程发动机
two - stroke cycle engine 二行程内燃机
four - stroke cycle engine 四行程内燃机
four stroke cycle engine 四冲程发动机
FOUR-STROKE ENGINE CYCLE 四冲程发动机循环 ; 四冲程发动机轮回 ; 四冲程策念头轮回 ; 四冲程策念头循环
If it needs only two strokes to complete a cycle, it is called a two-stroke cycle engine or, for short, a two-cycle engine.
如果发动机完成一个工作循环，只需要两个行程，就称为两冲程循环发动机，或者简称两冲程发动机。
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。
Otto built the practical four-stroke internal combustion engine called the "Otto Cycle Engine, " and as soon as he had completed his engine, he built it into a motorcycle.
奥托制造了第一台实用的四冲程内燃机，叫做“奥托循环发动机”，并且当完成制造他的发动机后他就把发动机安装在摩托车上。
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