parallel link motion四联杆机构运动
parallel underpick motion平行运动下投梭机构
in parallel connection motion并联列运行
center of parallel wheel motion侧倾中心
path of parallel wheel motion平行车轮的运动轨迹
parallel motion linkage平行四边形悬挂装置
parallel motion replicate平移复制
parallel motion protractor平行运动分度规;[测] 平移角尺;平行分度器
approximate parallel motion近似平行运动;翻译