hardness level

例句：

1. 1. The material'shardness level is crucial for its durability.
   该材料的硬度水平对其耐用性至关重要。
2. 2.The engineer measured the hardness level ofthe metal to ensure it meets industry standards.
   工程师测量了金属的硬度水平，以确保它符合行业标准。
3. 3. The hardness levelof the paint can affect its adhesion to the surface.
   油漆的硬度水平会影响其对表面的附着力。