短語(yǔ)詞組短語(yǔ)oscillating single arm 單臂擺oscillating arm mechanism 擺動(dòng)臂機(jī)構(gòu)oscillating arm fertilizer broadcaster 拐臂式撒肥機(jī)Oscillating arm of spanning 紡絲擺臂right left horizontal oscillating arm 左 返回 oscillating arm