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Care must be taken to completely seal entrance plugs ( eg. at a manway ) in refractory linings.必須小心地完全封閉耐火材料襯里的進(jìn)口門....

manway的音標(biāo)：manway的英式發(fā)音音標(biāo)為：['m?nwe?]manway的美式發(fā)音音標(biāo)為：['m?n?we?]...

n.（煤礦等內(nèi)的）人行巷道...