·2,447,543篇论文数据，部分数据来源于NoteExpress
This period of time is known as valve overlap.
这时期被称为气门重叠。
youdao
Valve timing and valve overlap vary on different engines.
配气正时和气门重叠变通用于不同的发动机。
This is called valve overlap. Valve timing and valve overlap vary on different engines.
不同的发动机，其配气相位和气门重叠是不一样的。
应用推荐
模块上移
模块下移
不移动