To understand this, it's important to keep in mind how Spirit parses: given multiple alternatives to a rule example, s: R1 | R2 |.. | rn, the one to the left gets the maximum priority.

为了理解这一点，需要注意Spirit是如何解析的：为示例规则S： r 1 | r 2 | . . | RN提供多个替代选择，左边的内容获得最大优先权。

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An RN is a number issued and registered by the FTC and may be issued to any firm in the U. s. that manufactures, imports, markets, distributes, or otherwise handles textile, wool, or fur products.

RN是由FTC发布和注册的任何在美国的加工商、进口商、销售公司、经销公司或其他买卖纺织品、毛产品或毛皮产品的公司。

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CGO were hydrotreated by RN 2 catalyst to remove N and S impurities and improve the quality. The hydrotreated CGO was proposed to be mixed with VGO as FCC feedstock after testing in the pilot plant.

采用脱氮活性高的RN-2 催化剂对管输油的焦化蜡油进行加氢处理，脱除其中的氮、硫等杂质及改善烃类组成后，进行催化裂化或与直馏蜡油混合作催化裂化进料。

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