Cov lus qhia rau kev hloov thiab xaiv cov saw hlau sijhawm zoo
Cov Lus Qhia rau Kev Hloov thiab Xaiv Lub Sijhawm Sib Hloov Yog Lub sijhawm sib hloov yog ib qho tseem ceeb hauv lub cav tsheb. Nws lub luag haujlwm yog tswj kev sib dhos ntawm lub crankshaft thiab camshaft tig, xyuas kom meej tias cov valve qhib thiab kaw thaum lub sijhawm raug. Yog tias qhov kev sib dhos no tsis sib dhos, kev ua haujlwm ntawm lub cav txo qis, kev siv roj zuj zus, thiab txawm tias ... Nyeem ntxiv