柴油车尾气排放的碳烟颗粒已引起严重的环境污染问题，柴油车排气标准也在不断提高。
Soot particles in exhaust gas from diesel-fuelled vehicles have caused a serious environmental pollution, thus promoting the establishment of more emission standards.
柴油车尾气排放的碳烟颗粒已引起严重的环境污染问题，柴油车排气标准也在不断提高。
Soot particles in exhaust gas from diesel-fuelled vehicles have caused a serious environmental pollution, thus promoting the establishment of more emission standards.
应用推荐