stroke speed冲程: travel; stroke; 4速度: velocity; speed; blast; bat回程速度: opening speed; return speed; speed of return stroke空行程速度: no-load speed里程速度表: odometer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:冲程速度,即可在微信中查询翻译