This paper presents the principle and advantage of diazocopy.

本文叙述了重氮复印法的原理及优点。

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The principle of design, the advantage and defect of the technique were discussed.

文中讨论了该手术的设计原理及其优缺点。

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The principle of design, the advantage and defect of the technique were discussed.

文中讨论了该手术的设计原理及其优缺点。

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