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Isi ihe gbasara valvụ iyuzucha
GỤKWUO -
Ụkpụrụ ọrụ nke valvụ ọnụ ụzọ ámá, nhazi na ojiji
GỤKWUO -
Usoro ọgwụgwọ elu nke ihe valvụ (2)
GỤKWUO -
Usoro ọgwụgwọ elu nke ihe valvụ (1)
GỤKWUO -
Ihe isii kpatara mmebi elu nke mkpuchi valvụ
GỤKWUO -
Nnyocha Ihe Mere na Ngwọta nke Ntapụ Valvụ
GỤKWUO -
Akụkọ ihe mere eme nke valvụ
GỤKWUO -
Okwu Mmalite nke ngwa ndị bụ isi nke valvụ na-achịkwa
GỤKWUO -
Usoro Nkọwa Valvụ
GỤKWUO -
Ị maara usoro teknụzụ iri atọ niile nke valvụ?
GỤKWUO -
Ihe ọmụma bụ isi nke valvụ ikpochapu
GỤKWUO -
Ụdị na nhọrọ nke ngwa valvụ pneumatic
GỤKWUO