They have a precision groundfinish 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。
2
They feature a precision groundfinish on both sides to prevent packing and seat damage.
闸板两面均经过精密精磨加工，避免损坏填料和阀座。
3
One thing most people don't realize is that if we don't finish the job on eradication, we will lose a lot of the ground we've gained over the past two decades.