The effect of preheating, test-piece thickness and coupling agents on the electric properties and the mechanical properties of the materials have been specially studied.
试验结果表明，模压前合理的预热可以显著地提高酚醛塑料的电性能及力学性能；
2
If you do that, you can record a script for each piece, and then put them all together in your actual test script.
如果您那样做，您可以为每一个页面记录一个脚本，然后将它们放在你实际的测试脚本中。
3
One way to determine your foot shape is to do a "wet test"—wet your foot, step on a piece of brown paper and trace your footprint.