常見例句雙語例句The utility model is composed of a main shaft, a bearing seat, a belt pulley, an eccentric wheel, a left and a right connecting rods, a left and a right guide bars, etc.它由主軸、軸承座、皮帶輪、偏心輪、左右連桿、左右導(dǎo)桿等組成，其主要特征是主軸上增設(shè)有聯(lián)軸器和平衡補償機搆。ip.com 返回 belt pulley seat