Silanes consist of a chain of silicon atoms covalently bound to hydrogen atoms.

构成硅烷烃的是一条硅原子链接形成的主链和以共价键链接在主链上的氢原子。

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I'm imagining something like, covalently bonded chains that have links between them.

我想象它们的样子，通过共价键结合的分子链。

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A covalently linked chain of deoxribonu- cleotides. The double helix is composed of two DNA strands.

脱氧核糖核苷酸以共价键连接起来的链。双螺旋由两条DNA链组成。

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They spread these films in alternate layers on top of sheets of cotton fabric and exposed the sandwich to ultraviolet light for 30 minutes to bond the layers covalently.

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