To start with, we’re launching this change in the U.S. only; we plan to roll it out elsewhere over time.

刚开始，我们仅在美国地区推出此次改变，我们计划随着时间的推移逐渐推广到其他地区。

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In addition, this valve is used to raise and lower the top BUR at the time of a roll change.

另外，在换辊时这个阀用来提升或降低上支承辊。

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In addition, this valve is used to raise and lower the top BUR at the time of a roll change.

另外，在换辊时这个阀用来提升或降低上支承辊。

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