天然气热值计量是比体积和质量计量更为科学和公平的计量方式。
Natural gas caloricity gaging is more scientific and impartial than volume gaging and mass gaging.
之所以称为沼气高值利用，就因为终端产品的生物天然气热值高、价值高（价格高），实现了沼气最大价值转化。
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.
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.
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