本文给出了工程技术中常用的锥面上一类曲线的展平方程，供机械帚性工艺钣金加工应用。

In this paper, a cone - type curve flattening equation commonly used in engineering technology is presented for applications of sheet metal processing in mechanical manufacturing process.

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成功举办应用技术巡回展。

Success held the exhibition of application technology.

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前言：目的：应用高效液相色谱-质谱联用技术测定果汁中的展青霉素。

Objective: to determine patulin in fruit juice by high performance liquid chromatography mass spectrometry.

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前言：目的：应用高效液相色谱-质谱联用技术测定果汁中的展青霉素。

Objective: to determine patulin in fruit juice by high performance liquid chromatography mass spectrometry.

youdao