allowable unit stress for compression

例句：

1. 1.The engineer must ensure that the material is within the allowable unit stress for compression.
   工程师必须确保材料在压缩时的允许应力范围内。
2. 2. The design of the structure must comply with the allowable unit stress for compression.
   结构的设计必须符合压缩时的允许应力要求。
3. 3.The stress in the material is determined by the allowable unit stress for compression.
   材料中的应力由压缩时的允许应力决定。