Slot valve bụ ụdị na-ebufe ọkpọkọ maka ntụ ntụ, granular, granular na obere ihe, nke bụ isi ihe nchịkwa iji dozie ma ọ bụ bepụ ihe na-asọ asọ. A na-eji ya eme ihe na metallurgy, Ngwuputa ihe, ihe owuwu ụlọ, kemịkalụ na usoro mmepụta ihe ndị ọzọ iji chịkwaa usoro nhazi ihe ...
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