Ezimbonini ezithembele kuma-bearings, ama-valve nezinye izinhlelo zemishini, ukukhetha amabhola ensimbi anembayo kuyinqubo ebalulekile.Ukucatshangelwa ngokucophelela kwezici ezifana nekhwalithi yezinto ezibonakalayo, ukusebenza kanye nokuphumelela kwezindleko kubalulekile ekuqinisekiseni ukusebenza kahle...
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