Lub valve yog ib yam ntawm cov yeeb nkab conveying rau hmoov, granular, granular thiab me me cov ntaub ntawv, uas yog lub ntsiab tswj cov cuab yeej los kho lossis txiav tawm cov khoom ntws. Dav siv nyob rau hauv metallurgy, mining, tsev cov ntaub ntawv, tshuaj thiab lwm yam kev lag luam systems los tswj cov khoom ntws regulatula ...
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