By the comparison of the model parameters in normal speed section and idling speed section of highway,some factors,which do affect the lead concentration in soil along highway,were discussed.是什么意思_By the comparison of the model parameters in normal speed section and idling speed section of highway,some factors,which do affect the lead concentration in soil along highway,were discussed.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句