cube strength

例句：

1. 1. The cube strength of the material is crucial for its durability.
   材料的立方强度对其耐用性至关重要。
2. 2. The engineer used a new formula to increase the cube strength of the concrete.
   工程师使用一种新的配方来提高混凝土的立方强度。
3. 3. The cube strength of the steel bars was tested to ensure they met the required standards.
   对钢筋的立方强度进行了测试，以确保它们符合所需的标准。