Warning: file_put_contents(/www/wwwroot/ppbbu/4cd.cn/cache/09eb64b245ad464a429ab2ba960935dc.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/4cd.cn/index.php on line 55 importanc是什么意思，importanc的翻译，importanc音标、读音、用法和例句_沉淀汉英词典
This paper presents the challenge that diesel engines s hall face to meet standards and regulations of emissions,discribes its importanc e of the aftertreatment technology are presented. 本文分析了目前柴油機麪臨的未來排放汙染物標準的挑戰以及後処理技術的必要性。