The decline in crude quality and changing refinery product markets is increasing the hydrogen requirements of oil refineries.

原油质量下降，炼油产品市场变幻莫测，都使得炼油厂对氢气的需求不断增加。

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The legend of Jigong was based on the real historical figure, with strong, local "crude quality" while highlighting the mysterious supernatural power contributing to the magical elements of the plot.

济公传说依附于真实的历史人物，具有地域的原生性，同时突出神秘的超自然力，具有情节的神奇性。

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The objective is to establish the quality standard for crude drug of Illicium verum.

目的是建立八角茴香原料药的质量标准。

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Valero Energy , a refiner that processes lower quality crude oil into products like gasoline and jet fuel.

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The basin has some veteran oilfields, which in the last century have given up 27 billion barrels of high-quality crude and still produce 740, 000 barrels a day.

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The discounts have widened over the past year, playing into Valero's hands: 70% of its refineries are equipped to process the lowest-quality crude, a higher proportion than at any of the other big refiners.

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