The gelation time of this epoxy resin with modified liquid anhydride was related to the chemical structure and the composition of epoxy resin, curing temperature and accelerator.

环氧树脂与改性液体酸酐体系的凝胶时间与环氧树脂的结构与组成、固化温度及促进剂等因素有关；

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Buchholz, a physicist and a nuclear engineer, is an expert at something called accelerator mass spectrometry, an extraordinarily precise method of determining the chemical composition of materials.

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