Ụlọ akwụkwọ agụmakwụkwọ
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Kedu ihe bụ inch, gịnị bụ DN, na gịnị bụ Φ?
Kedu ihe bụ inch: Otu inch (“) bụ ihe a na-ejikarị eme ihe na sistemụ America, dị ka ọkpọkọ, valves, flanges, elbows, pumps, tees, wdg. Dịka ọmụmaatụ, nha nke 10″. Okwu inch (nke akpọchiri dị ka “na.”) na Dutch pụtara isi mkpịsị aka na mbụ, na otu inch bụ le...GỤKWUO
- Jinan ígwè otu ụlọ ọrụ ogige, Wuan, Handan, China