casing

美['keɪsɪŋ] 英['keɪsɪŋ]

n. 套；罩；匣；盒；[经](石油)套管；包装

sp. 动词case的现在分词.

近义词：shell，case，covering，outside，exterior，skin，sleeve，sheath，blanket，crust，layer，carapace，exoskeleton，

Noun

the housing or outer covering of something;
"the clock has a walnut case"
the outermost covering of a pneumatic tire
the enclosing frame around a door or window opening;
"the casings had rotted away and had to be replaced"

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