The exhausts contribution in no-heating season was 70% and 50% in heating season; but the 6 ring compounds distribution from coal combustion was higher than that from the exhausts.
在非采暖季机动车尾气排放的贡献率为70%，在采暖季贡献率为50%，煤的燃烧对六环化合物的贡献高于机动车排放的贡献。
Several methods for radial pressure distribution measurement on a piston ring which is one of key parts of an inter combustion engine are analyzed in the article.
分析了内燃机中关键零件活塞环的重要参数径向压力分布的几种测量方法。
In this paper, optimizing control of calcining heat and fuel combustion in a ring-type calciner are expounded.
本文阐述了碳素环式焙烧炉的温度控制和燃料优化控制。
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