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为解决塑料薄膜大棚内滴水和透光性差的问题,国外已研制成大量的无滴性薄膜和外涂型防水滴剂;我国无滴性薄膜的研制还处于试制阶段,而......
Development of Alkylation Toluene with Methanol for Fuel on Modified ZSM-5 Zeolites by Amphoteric Su
Methylation of toluene over ZSM-5 zeolites modified by the introduction of Sr of 2.5%, 5%, and 10% by weight was studied......