in-situ direct shear test

例句：

1. 1.The in-situ direct shear test is a crucial step in the construction of foundations.
   原位直接剪切试验是地基建设中至关重要的一步。
2. 2.The results of this test will help us understand the behavior of soil under different conditions.
   这项测试的结果将帮助我们了解土壤在不同条件下的行为。
3. 3. In-situ direct shear tests are commonly used to assess the strength and stability of soils.
   原位直接剪切试验常用于评估土壤的强度和稳定性。