The basic structure and working principle of the piezoelectric nozzle is introduced, the design concepts aiming at the nozzle in designing screen manufacturing machine are discussed.

本文介绍了压电式喷头的基本结构和工作原理，讨论了在设计制网机时针对压电式喷头所采用的一些设计方法。

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The invention discloses a screen filter, aiming to provide a screen filter that has the characteristics of large effective filtering area, high filtering efficiency and large flow.

本发明公开了一种网式过滤器，本发明的目的是提供一种有效过滤面积大，过滤效率高和流量大的网式过滤器。

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In the 1990s several big pharmaceutical firms, including Bayer AG of Germany, Eli Lilly and Pfizer, formed alliances with Chinese research institutes or companies that specialized in traditional Chinese medicines, aiming to apply modern drug-hunting techniques to screen Chinese herbal medicines for potential Western blockbusters.

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In the 1990s several big pharmaceutical firms, including Bayer (nyse: BAY - news - people ) AG of Germany, Eli Lilly and Pfizer, formed alliances with Chinese research institutes or companies that specialized in traditional Chinese medicines, aiming to apply modern drug-hunting techniques to screen Chinese herbal medicines for potential Western blockbusters.

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And getting the video is as easy as aiming any of a new generation of camcorders at a movie screen.

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