The buildings' windows in Hamburg have a bit complex mechanical structure with many kinds of opening styles.

汉堡楼房的窗户里机械机构比较复杂，开窗方式多样。

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Double protection of electronic and mechanical, automatic cut off power after opening, increase the use and maintenance of security, stability, reliability.

电子、机械双重保护，开盖后自动切断电源，增加了使用和维护的安全性、稳定、可靠性。

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Studies the mechanical performance such as minimum start-up air speed, reaction time and ventilation performance of the catcher developed by the authors on the simple opening ventilation test-bed.

利用搭建的简易开放式通风实验台，实验研究了所研制的一种具有自动捕风功能的通风装置的最小启动风速、反应时间等机械性能及通风性能。

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