four-stroke internal combustion engine [动力] [车辆] 四冲程内燃机 ; 什么是四冲程内燃机 ; 四冲程内燃机是
two-stroke internal combustion engine [动力] 二冲程内燃机
two stroke internal combustion engines 二冲程内燃机
Combustion expansion stroke 燃烧膨胀冲程
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.
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。
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。
The authors consider that increasing the piston stroke is an effective scheme, and point out that the petaloid combustion chamber has a good adaptability.
作者认为，加长行程是十分有效的方案，同时也指出花瓣形燃烧室具有良好的适应性。
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