It is an efficacious method that inferior brand diesel oil is used on locomotive diesel engine in cold weather to economize energy sources and increase economic benefit.
寒冷气候条件下机车柴油机使用低标号柴油是铁路节能降耗、提高经济效益的有效途径。
The cold smoke is the result of access of excessive engine oil into the combustion chamber, but fail to burning after evaporation.
蓝烟是由于过量机油进入燃烧室，蒸发后未能燃烧的结果。
The cold smoke is the result of access of excessive engine oil into the combustion chamber, but fail to burning after evaporation.
蓝烟是由于过量机油进入燃烧室，蒸发后未能燃烧的结果。
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