短語(yǔ)詞組短語(yǔ)first speed driven gear 一檔從動(dòng)齒輪first speed gear sleeve 一檔齒輪套筒first speed sliding gear 一速滑移齒輪first speed planet gear bearing 一速行星齒輪軸承first rear axle speed gear 頭擋齒輪 返回 first speed gear