A detergent for cleaning iron monosulfide was formulated with surfactant, diamino-propadiene, citric and EDTA, and its cleaning mechanism was discussed.
报道了一种以表面活性剂、丙二烯二
和柠檬酸、EDTA为主要组分
铁清洗剂配方和其在炼油装置
用情况。
A detergent for cleaning iron monosulfide was formulated with surfactant, diamino-propadiene, citric and EDTA, and its cleaning mechanism was discussed.
报道了一种以表面活性剂、丙二烯二和柠檬酸、EDTA为主要组分铁清洗剂配方和其在炼油装置用情况。
The Synthetic method of 4,4 ′ diamino 3,3 ′ dichlorodiphenyl methane has been improved using polyformaldehyde.
本文报道了多聚甲醛和邻氯苯
合成3，3′二氯4，4′二氨基二苯基甲烷合成方法。
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