Echichi kpo oku mmiri na-amatawanye nke onye ọ bụla, ọtụtụ ọrụ mpaghara ejirila nke nta nke nta malite ịwụnye ngwa ọkụ mmiri, ya mere, gịnị kpatara ikpo ọkụ mmiri ji ewu ewu?Ndị a biko 505 metal Products Co., LTD.- Nna-ukwu nke akwa akwa ọla iji gbasaa ya: nlekọta ahụike Radian ...
N'oge a, na mgbasawanye nke ntanye nke ngwa ahịa ngwa ngwa ngwa ngwa ahịa, ọtụtụ ngwa ngwa ngwa ahịa ahịa ụdị ahịa adịghị agwụ agwụ, dị ka nkwonkwo ọkpọkọ, okwu hydraulic bụ usoro hydraulic iji jikọọ pipeline ma ọ bụ pipeline arụnyere na hydraulic components nke akụkụ ahụ, ya mere. ..
Okwu brass na-ezo aka ọla kọpa zinc alloy, ọ malitere na Ming Dynasty, ndekọ ya na "Ming Hui Dian" : "Jiajing ka ihe atụ, Tongbao ego isii nde wen, abụọ ọkụ brass iri anọ na asaa puku 272 jin…… .Brass A ọla kọpa alloy nwere zinc dị ka ihe mgbakwunye isi ...
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