There is a fixed relationship between the gauge length and the cross-sectional area of the test-piece at the reduced diameter.
标距长度和试样在直径减少处的横截面面积之间有固定的关系。
There is a fixed relationship between the gauge length and the cross-sectional area of the test-piece at the reduced diameter.
标距长度和试样在直径减少处的横截面面积之间有固定的关系。
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