The invention provides a method and a rolling mill capable of preventing, at least reducing eccentricity and un-round properties of rolled pipes.
提供一种方法和一种轧机，利用它们可以避免、至少可以减小轧制的管的偏 心和不圆性的产生。
The UN Security Council approved a fourth round of sanctions against Iran over its nuclear programme.
联合国安理会批准了就核计划向伊朗的第四轮制裁。
The final round of UN climate talks before this year's summit in Mexico, which begins at the end of November, has got under way in China.
今年定于十一月底召开的墨西哥峰会前的最后一轮连系国闲谈，已在中国拉开帷幕。
The final round of UN climate talks before this year's summit in Mexico, which begins at the end of November, has got under way in China.
今年定于十一月底召开的墨西哥峰会前的最后一轮连系国闲谈，已在中国拉开帷幕。
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