在测试次数越多，结果越能反映出现实的使用情况。
The more tests, the more the results should reflect real-world usage.
控制测试的范围，是指某项控制活动的的测试次数。
Thee extent of the test of control is the times of the test for some control activity.
根据实验及经验，明确了如何设定张力架张力、预加张力、速度、热箱温度、测试次数。
According to the test and the experience, the article show how to set the tension on tension frame, the pretension, the speed, the temperature of heater and the test number.
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