Pullu普尔卢pullv.拉；拖；牵；拔；吸引n.拉；拉力；引力；划船；影响力pull out wire可抽出钢丝pull-insert锥体拉出试验插入物pulling chain牵引键,牵引链pulldown menu下拉菜单pulling point岩心提断点pull back ram后拉式机具的外置油缸Pullout force拔出力pull to piecs把 ... 撕成碎片pull-grader牵引式刮土平地机puller roller牵引罗拉