另外，在氢源燃料电池系统中，如果氢来源于燃料油，那么必须使用超低硫或无硫燃料油。
Besides, the fuels with ultra-low level of sulfur or free of sulfur are required for hydrogen fuel cell if its hydrogen is produced from the fuels.
其中燃料油质量标准提高的一个重要标志是硫含量被严格限制，燃料油无硫化已成为一种趋势。
An important sign of fuel quality standard upgrade is that sulfur content is strictly constrained. Fuel without sulfur has become the trend.
其中燃料油质量标准提高的一个重要标志是硫含量被严格限制，燃料油无硫化已成为一种趋势。
An important sign of fuel quality standard upgrade is that sulfur content is strictly constrained. Fuel without sulfur has become the trend.
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