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 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。
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