Elastic fastening device弹性接合装置
cross elastic connecting device横向弹性连接装置
elastic clamping device弹性定心夹紧机构
elastic link device弹性连接装置
elastic calibration device控制功率计
elastic prevention device弹性避让装置
tie plate elastic clamp device钢轨弹力紧固装置
elastic surface wave device弹性表面波设备