▶ Ua ntej, qhov kub thiab txias yog qhov tsawg, cov roj combustion nyob rau hauv lub tog raj kheej deteriorate, roj atomization tsis zoo, lub sij hawm combustion tom qab ignition nce, lub cav yog yooj yim mus ua hauj lwm ntxhib, aggravate cov kev puas tsuaj ntawm crankshaft bearings, piston rings thiab lwm yam. , txo lub zog thiab ...
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