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

A new sealing cup has been developed, and the problems of gas leak and iron filings accumulation existing in former sealing cup-type plugging have been solved.

研究出新型皮碗，解决了原皮碗式封堵存在的燃气泄漏和积存铁屑问题。

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