粘附磨损和疲劳磨损是轨钢的主要磨损形式。
Adhesive wear and surface - fatigue wear are the two major wear forms in rail steel.
这些酶通过粘附于所谓的化学剂乙酰组蛋白来激活基因， 像线圈一样的蛋白以紧密创伤形式缠绕着DNA。
These enzymes activate genes by attaching chemicals called acetyl groups to histones, the spool-like proteins that hold DNA in a tightly wound form.
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