劈得开的;
Three noncyclic acetal-linked cleavable surfactants were prepared based on the optimum condition by condensation of para formaldehyde with polyethers O-9, O-15, O-20. The yield was 88.6%, 81%, 75%, respectively and the structure was determined by NMR.
采用最佳工艺条件合成了O-9、O-15、O-20缩甲醛三种分子量较大的缩醛型聚醚,产率分别为88.6%、81.9%、75%。
It is intended for external installation on a test vehicle via the use an electro-cleavable adhesive.
用一种电可分离粘合剂将它安装在试验机上.
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