無煙囪工業 wúyāncōnggōngyè smokeless industry Origin Definitions Defs Strokes Stroke Words Sentences Sents 无 無 wú adjectiveverb to not have to not have; there is no; lack; (as prefix) non-; un-; -less烟囱 煙囪 yāncōng noun chimney chimney; smokestack; stovepipe; a tube or passage for smoke or steam to escape from a stove or boiler工业 工業 gōngyè noun industry industry; manufacturing sector