短语词组短語chock -up 墊住chock up with 塞住up chock 支承輥的軸承座back -up chock 支承輥的軸承座;支承輥軸承座back up chock 支承輥的軸承座up roll chock 支撐輥軸承座Back -up roll chock 支撐輥軸承座 返回 chock up