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1·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。

2·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。

3·Crews are placing the boom in different areas on Coast waterways to help protect against an approaching oil slick in the Gulf of Mexico.

工作人员在海岸附近的不同水域设置了警戒线，希望能够阻止海面浮油进入墨西哥湾海域。

4·Up-loading System: Boom system, Rotary table, Slewing mechanism, Fixed turret, Landing leg. Main function: Complete the concrete delivery and placing which support the vehicle to ensure its stability.

上装组成部分：臂架系统、转台、回转机构、固定转塔、支撑支腿等。主要作用：完成混凝土的输送并支撑整车，保证其稳定性。