testing of materials

• 材料试验

testing of materials的用法和样例：

例句

1. The testing person uses the universal testing machine to make material mechanical testing.
   化验人员用万能材料试验机做材料机械性能试验。
2. If a range of specimen sizes is needed for materials tests, the fixtures should be carefully scaled to the specimen.
   如果材料试验需用一系列的试样尺寸，则夹具就应当仔细地按试样进行标度。