短語(yǔ)詞組短語(yǔ)straight t ball 直線球straight ball -guide 直線滾珠導(dǎo)軌Fraternal Straight Ball 友愛(ài)直線球a sudden straight ball 突然直傳Straight instsert brass ball valve 承插式球閥The Ball Straight Down 使球直線 返回 straight ball