V-port trim has a more linear throttling curve than plug or ball discs, but none of these trims are recommended for continuous severe throttling which may require using a control valve.

形端口阀内件截止阀比塞形阀瓣或球形阀瓣截止阀具有更加线性的节流曲线，但是，所有这些类型的截止阀都不建议连续用于严格的节流应用中，这种情况可能需要采用控制阀。

youdao

V-ball valve repair without a long, long life, to provide you with the real state of efficiency of a process control valve.

型球阀长期不需修理，使用寿命长，为您提供了真正的高效率进行控制工艺状况的一种阀门。

youdao

Granule morphology of granulated blast furnace slag powders prepared with vertical mill (GBFS-V) and close circuit ball mill (GBFS-B) respectively were observed with SEM.

采用扫描电镜对球磨高炉矿渣粉体和立磨高炉矿渣粉体的颗粒形貌进行了观察。

youdao

The first was Courtney Walsh for West Indies v Australia at Brisbane in 1988-89 (last ball of the first innings and the first two of the second).

BBC: Ask Malcolm Ashton

Hair made the offer in the wake of the ball-tampering row at last week's England v Pakistan Test at The Oval.

BBC: SPORT | Cricket | Hair 'could stay' as Test umpire

The "V" in ProV1, for example, derives from "veneer, " which was the lab term for the ball's primary innovation when it debuted in 2000, a soft but durable cover.

WSJ: A Plea for More Poetry on Golf Balls | Golf Journal by John Paul Newport