unconfined compression test

例句：

1. 1. The unconfined compression test is used to measure the strength of materials under stress.
   无限制压缩测试用于测量材料在应力下的力量。
2. 2. In this test, the sample is subjected to a force that causes it to deform without any restraint.
   在这个测试中，样品受到一个力的作用，使其变形而没有任何限制。
3. 3. The results of the test can provide valuable insights into the behavior of materials under extreme conditions.
   测试结果可以为了解材料在极端条件下的行为提供宝贵的见解。