concrete mix design

例句：

1. 1.The concrete mix design is crucial for the construction of high-rise buildings.
   混凝土混合设计对于高层建筑的建设至关重要。
2. 2.The engineer used a computer program to optimize the concrete mix design.
   工程师使用计算机程序优化混凝土混合设计。
3. 3. The project manager was responsible for ensuring that the concrete mix design met all safety standards.
   项目经理负责确保混凝土混合设计符合所有安全标准。