短語(yǔ)詞組短語(yǔ)Planetary gear drive mechanism [機(jī)]行星齒輪傳動(dòng)機(jī)構(gòu)Planet gear drive mechanism 微型行星齒輪減速器harmonic gear drive mechanism [機(jī)]諧波齒輪傳動(dòng)機(jī)構(gòu)NGW planetary gear drive mechanism NGW 型行星齒輪傳動(dòng)機(jī)構(gòu) 返回 drive gear mechanism