大学英语词汇短语释义解析及例句 placing boom


释义：

placing boom 灌筑吊杆

例句：



After being awarded the contract, a decided to purchase 3 site concrete pumps and the tunnel placing Boom from the b.

在得到合同后，决定从B那里购买3台现浇混凝土泵和隧道布料机。



If the placing Boom is swiveled 180 degrees from the Basic position to the rear, the end hose can reach every point of the roadway surface being concreted.

如果布料机臂旋转180度从前面旋转到后面，软管末端能伸到要浇注混凝土路面板的任一处。