3460| 8
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[求助] TDI的干性好于HDI固化剂的干性,关键是因为苯环与NCO共轭对NCO活性的影响吗? |
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三本树脂小何15627292792/QQ4220
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想问题,一定要勤思索,千万不能人云亦云,随波逐流 |
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