They are in the vanguard of technological advance.
他们是技术发展的导。
They are in the vanguard of technological advance.
他们是技术发展的导。
In a way they played a vanguard role.
在某种意义上说,他们起的作用。
It has vanguard technology of friction welding and chroming and so on.
具磨擦焊接和镀铬等进生产工艺。
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