Hauv cov tsev pej xeem, tshwj xeeb tshaj yog kev lag luam, cov tshuab hluav taws xob diesel yuav tsum pom nyob hauv qab.Thaum muaj cov kev cai tshwj xeeb rau lub suab nrov, resonance, thiab haus luam yeeb, lossis qhov twg tsis muaj qhov zoo tshaj plaws hauv qhov chaw, koj tuaj yeem xaiv qhov txo ...
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