It was shown that the curing process of resoles, at first, proceeded by condensation reaction of methylol groups, and the formation of dimethylene ether linkage was predominant.
结果表明热固性酚醛固化过程,先是羟甲缩合反应,缩合反应形成醚键是主要。
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You noticed, of course, that his boots had been resoled.
你肯定注意到他换鞋。
When I was three, I could resole a shoe.
我三岁那会 我都能换鞋。
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划词翻译
详细解释
固化过程,
先是羟甲
缩合反应,缩合反应形成醚键是主要
换
鞋
。
起
麦瑟尔夫人第一季
