美国每年生产大约220万公吨的苯酚高分子材料，用于工业和商业领域，包括生产耐用塑料。

Phenol polymers are produced at an annual rate of 2.2 million metric tons per year in the United States for many industrial and commercial applications including durable plastics.

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聚对二甲苯是一种新型高分子材料，自一九六五年美国联合碳化物公司（简称U。

Parylene is a newly developed macromolecular material, first prepared by the Union Carbide Corporation of the U.

youdao

聚对二甲苯是一种新型高分子材料，自一九六五年美国联合碳化物公司（简称U。

Parylene is a newly developed macromolecular material, first prepared by the Union Carbide Corporation of the U.

youdao