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英语例句库

Reaction of ferrocenylphenylcarbinol with ethereal solution of boron trifluoride in dichloride methane formed the relevant ferrocenylphenylmethyl carbocation.

茂铁基苯基醇化硼-乙溶液在烷中作用,形成茂铁苯基基碳正离子。

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原声例句
科普

These are combined in a chemical reaction to create ethylene dichloride, which is turned into a gas, and then, through a process called " polymerization" , it becomes a fine, white powder called polyvinyl chloride, or PVC.

它们在化学反应中结合，生二氯乙烯，气体，然后，通过个叫做“聚合”的过程，种白色的细粉末，叫做聚氯乙烯，简称PVC。

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3G, 401(K), a,
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