英语词典
Unsaturated polyester resin ( UPR) wastes pyrolysis was cracked to prepare feed stock, and process conditions of catalytic cracking reaction were introduced systematically.
对不饱和聚酯树脂(UPR)废料裂解制原料油技术进行了研究,系统地考察了催化裂解反应工艺条件。
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