It has vanguard technology of friction welding and chroming and so on.
焊接和镀铬等先进生产工艺。
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期的;It has vanguard technology of friction welding and chroming and so on.
焊接和镀铬等先进生产工艺。
They are in the vanguard of technological advance.
他们是技术发展的先导。
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