This category includes degrees that are not listed under the usual classifications of mining or petroleum technology.
该范畴包括了通常没有列入采矿或石油技术类目的学位。
A term used in petroleum technology to describe a method of removing methyl groups (or other alkyl groups) from a hydrocarbon compound and replacing them with hydrogen.
石油技术所用的一个术语，叙述将烃类化合物的甲基(或其他烷基)脱除下来并代之以氢的方法。
A term used in petroleum technology to describe a method of removing methyl groups (or other alkyl groups) from a hydrocarbon compound and replacing them with hydrogen.
石油技术所用的一个术语，叙述将烃类化合物的甲基(或其他烷基)脱除下来并代之以氢的方法。
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