planetary machine meaning in English

行星齿轮机器

Ordinary gear transmission is hard to do so , the suitably multistage spur gear transmission that adopts 2k - h and ngw model planetary machine should be considered and in order to make machine further miniaturization , the closed planetary gear train should be adopted
而普通的齿轮传动难以满足，故宜采用2k - h 、 ngw型的多级直齿行星齿轮传动，并且为使机构进一步小型化，应考虑采用封闭轮系。