db_storage = DatabaseStorage(self.config.db_path)
据悉，这项技术可使部件的生产效率最高提升80%，为实现高精度零件的批量生产提供了可能。
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Jimmy Kimmel wasn't a fan of Donald Trump's State of the Union address, but it sounds as though plenty of right-wing politicians and talking heads were.
The answer was the US Navy, which was hungry for new pilots after World War Two. It was not building rockets but at least it involved flying.