当延期药吸湿后压药时，其压药的一致性变好，提高了延期药的压碎强度和抗冲击性能。
When the delay composition is moisture absorption, the coherence of the pressing delay composition become good, it enhance the crushability intensity and the resist impact capability.
并简单介绍了提高PET抗冲击性和机械强度，相应改善其使用性能的方法。
And the methods of the improvement of usage properties by enhancing impact resistance and mechanical strength of PET are simply stated.
并简单介绍了提高PET抗冲击性和机械强度，相应改善其使用性能的方法。
And the methods of the improvement of usage properties by enhancing impact resistance and mechanical strength of PET are simply stated.
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