... 浓稠食物 stodge 化学计量 stoichiometric amount 化学计量系数 stoichiometric coefficient ...
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But traditional Friedel-Crafts reaction has its own limitations, such as requirement of a stoichiometric amount of Lewis acid catalysts and large amounts of undesired products.
传统的傅克反应的局限性在于，需要等量的路易斯酸催化剂和产生大量的副产物。
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