Therefore, water vapor permeability of flexible packaging material (or barrier) of the test of testing more and more important in the packaging.

因此，对软包装材料透气透湿性（或阻隔性）的测试研究在包装测试中越来越重要。

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The results show that rigid material has a better effect than flexible one in isolating vibration, so the former should be selected as barrier material in engineering.

研究表明，刚性材料比柔性材料具有更好的隔振效果，在隔振设计时应选择刚性屏障材料；

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