Non - rotating stem has close roundness and straightness tolerances and is burnished for a superior surface finish.

不旋转阀杆避免了圆度和直度偏差,并且具有相当好的表面光洁度.

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Superior surface utilization in mass and heat transfer, allowing shorter packed bed heights.

在传质和传热过程中,优异的表面利用率, 可降低填料层高度.

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