structure sheaf

例句：

1. 1.The researcher analyzed the structure of the material to understand its strengths and weaknesses.
   研究者分析了材料的结构以了解其强度和弱点。
2. 2. The architect designed a structure sheaf that would support the building's weight.
   建筑师设计了一个结构束来支撑建筑物的重量。
3. 3. The engineer studied the structure sheaf to ensure it met all safety standards.
   工程师研究了结构束以确保它符合所有安全标准。