The casing pump includes the pressure test device, speed reducer and sealing cup.

套管泵由压力检测装置、减速装置和密封皮碗等组成。

youdao

The improved sealing cup-type plugging technology has remarkable social benefit and economic benefit.

改进后的皮碗式封堵技术经济效益和社会效益显著。

youdao

The invention relates to a sealing cup which is easy to open with a cup cover that is hard to open for heat expansion and contraction.

本发明涉及一种容易开启密封水杯因热胀冷缩杯盖很难开启的杯盖的水杯。

youdao

Fox made his debut in the 5-0 victory over Al-Ahly in the Wembley Cup on Friday, after sealing his move from Coventry for an undisclosed fee.

BBC: Mowbray plans more transfer raids