Black smoke is caused by rawfuel being burnt in the exhaust.
黑烟说明有燃料在排气管中燃烧。
2
Due to different production conditions, quality of applied rawfuel, and original technical level and management level of the enterprise, the above data will be different.
以上数据因企业的生产条件、所使用原燃料的质量、原有技术水平和管理水平的不同而有所偏差。
3
Enriching raw uranium is more expensive than converting highly enriched uranium to fuel grade.