protective casing

基本解釋

Already free of the protective casing around his foot, Rooney is walking without discomfort and will step up his training next week.
現(xiàn)在魯尼腳上的保護(hù)裝置已經(jīng)拆除，他已經(jīng)可以無障礙的走路了，下周就可以恢複訓(xùn)練。
The two-stage cementing technique was used for the protective casing of the horizonal well in Tahe oil field because of a long open-hole interval in secondary spudding.
塔河油田水平井由於第二次開鑽裸眼段長(zhǎng)，技術(shù)套琯採(cǎi)用雙級(jí)固井技術(shù)。
The protective casing plays the role of protecting the electronic thermometer and the electronic watch at one side face of the electronic thermometer is convenient for mastering time by people.
保護(hù)套能對(duì)電子溫度計(jì)起到保護(hù)的作用；電子溫度計(jì)一側(cè)麪的電子表方便人們掌握時(shí)間。
ip.com

Hydraulic fracturing involves the injection of fluid consisting of approximately 99.5% water and sand (the rest consists of common industrial or even household chemicals or materials) through wells constructed with protective casing and cement, into producing shale formations.
FORBES: Why Anti-Fracking Groups Are Shifting Their Story From Water To Air Quality