有些机械快速操作。

Some of the mechanisms operate quickly.

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快开盲板是一种能快速开启和关闭的机械装置。

The quick opening closure is a mechanical device which can open and close quickly.

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本发明可用机械化快速施工。

And the invention can be processed mechanically.

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本发明可用机械化快速施工。

And the invention can be processed mechanically.

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