The protection of files is the prerequisite for their permanent use and it has a very important position in the file work of the new era.

档案安全保护是档案永续利用的前提，在新时期的档案工作中处于十分重要的地位。

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Dr Post's main innovation is to use permanent magnets to do the lifting.

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This will be the first commercial wind farm in the U.S. to deploy, at scale, turbines that use permanent magnet generators tech-speak for evolutionary turbine technology that will improve efficiency, reliability and grid connection capabilities.

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He also expressed hope that Gore, as president, would seek to outlaw the use of permanent striker replacements.

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