valve timing汽: vapour steam门: entrance; exit; door; gate分配: distribution; allocation; as ...相位: phase position; phase的: 4次方是 The fourth power of 2 i ...下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:汽门分配相位的调节,即可在微信中查询翻译