This standard provides the requirements for a Brinell testing machine and the procedures for performing Brinell hardness tests.
本标准同时规定了对布氏硬度计的要求，以及进行布氏硬度试验的步骤。
In addition, two hardness tests showed that the natural aging has great influence on the hardness distribution in the two alloys.
此外，两次硬度试验表明，自然时效对两种状态合金的硬度分布存在影响。
The hardness tests on welding joints prove this by showing that the hardness reduces in fusion area, and increases slightly in weld zone.
通过对焊接接头的硬度检测，发现熔合区硬度下降，焊缝区略有上升。
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