stacked loop

例句：

1. 1.The engineer used a stacked loop to reinforce the beam.
   工程师用堆叠循环加固了梁。
2. 2.The scientist discovered a new method of stacked loops for energy storage.
   科学家发现了一种新的堆叠循环能量存储方法。
3. 3.The construction workers used stacked loops to reinforce the foundation.
   建筑工人使用堆叠循环加固地基。