riser base

例句：

1. 1. The engineer designed a new riser base for the bridge to improve its stability.
   工程师为桥梁设计了一个新的升降机基础，以增强其稳定性。
2. 2.The construction of the new airport required the installation of a riser base to support the weight of the aircraft.
   新机场的建设需要安装一个升降机基础来支撑飞机的重量。
3. 3. The riser base was constructed using high-quality steel and is expected to withstand heavy loads.
   升降机基础使用了高质量的钢材建造，并预期能够承受重载。