I-China hlola izinzuzo ze-valve yokusungula: vimbela ukugeleza okubuyela emuva, ukubekwa uphawu okuhle nokunye
I-China hlola izinzuzo ze-valve yokusungula: vimbela ukugeleza okubuyela emuva, ukubekwa uphawu okuhle njalonjalo I-valve yokuhlola i-China iyimishini yokulawula uketshezi evame ukusetshenziswa, enezinzuzo ezihlukahlukene, okuhlanganisa ukuvimbela ukugeleza okubuyela emuva, ukuvala uphawu oluhle nokunye. Lesi sihloko w...
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