The natural gas products are with higher heat values, higher commercial values, than the biogas without treatment, so the value of biogas could be utilized in a maximum way.
3
为了提高彩管玻壳的生产质量,要求对做为玻璃炉窑燃料的天然气的热值进行精确控制。
The heating value of the natural gas used as the fuel for the glass melting must be accurately controlled to improve the production quality of color TV tubes.