套管環(huán)空casing: n. 1.裝箱,裝袋,入鞘。 2.〔集合詞〕包裝箱[鞘、 ...annulus: n. (pl. -li , annuluses) 1.環(huán) ...casing-hole annulus: 套管與井壁環(huán)空casing-screen annulus: 套管casing-to-hole annulus: 套管井壁環(huán)空下載手機詞典可隨時隨地查詞查翻譯