常見例句I think Rachet body if black color is cool, same as Ironhide. 已經(jīng)有只黑色了;再多一只比人有重覆的感覺.Two fast feeding projects are developed for overcoming the problems existed in the former device,a rachet wheel mechanism,which responses slowly,easy to lose step,has low precision and so on. 針對傳統(tǒng)沖剪機(jī)依靠棘輪機(jī)構(gòu)實(shí)現(xiàn)步進(jìn)送料時(shí)響應(yīng)慢、易失步、精度差等問題,研究和設(shè)計(jì)了兩種提速供料的實(shí)現(xiàn)方案,并對其作了應(yīng)用分析。steam boat ratchet =steam boat rachet 花籃螺絲rachet up 增加, 漸進(jìn),=ratchet up 返回 rachet