The polyolefin composite plastics possess high rigidity, high strength, high heat-resistance and low cost by modification.
通过改性可获得高刚性、高强度、高耐热、低成本的聚烯烃塑料。
The high coefficient of thermal expansion and low rigidity of many plastics increases the risk that the pipe will lose its dimensional stability.
很多塑料的热膨胀系数高、刚性低，这增加了(塑料)管道失去空间稳定性的风险。
The high coefficient of thermal expansion and low rigidity of many plastics increases the risk that the pipe will lose its dimensional stability.
很多塑料的热膨胀系数高、刚性低，这增加了(塑料)管道失去空间稳定性的风险。
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