固定工作台经过精磨加工，表面平整光滑。
Fixing bench pass fine grinding, the surface is glossy smooth.
固定工作台经过精磨加工，表面平整光滑。
Fixing bench pass fine grinding, the surface is glossy and smooth.
闸板两侧经过精密的精磨加工工艺，能够防止密封填料和阀座的损坏。
They have a precision ground finish on both sides to prevent packing and seat damage.
闸板两侧经过精密的精磨加工工艺，能够防止密封填料和阀座的损坏。
They have a precision ground finish on both sides to prevent packing and seat damage.
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