不平行等曲柄四连桿组 non parallel crank four bar linkage: 不平行四杆回转链系non-parallel crank four bar linkage: 不平行四杆回转链系four-bar linkage,equal crank: 等曲柄四连杆组four-bar linkage,parallel crank: 平行曲柄四连杆组parallel crank four bar linkage: 平行四杆回转链系下载手机词典可随时随地查词查翻译