Since many secondary vocational schools are run by enterprises, institutions, mines and factories, the graduates of these schools often can go directly to work in the sponsoring organizations.

由于许多中等职业学校都由企业、机关、煤矿和工厂开办的，所以毕业生常常可以直接在办学单位里工作。

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Compared with Sulfocyanide Photometry and Lead Molybdate Weight method, this method is simple, rapid and accurate, and worth being spread in factories, mines and other enterprises.

通过与硫氰酸盐光度法和钼酸铅重量法对比，证明了本方法简单、快速、准确，值得在厂矿企业大力推广。

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Be used for factories, mines and enterprises such as heat-engine plant, chemical plant, be regenerated the equipment purifying the special use resisting to burn oil.

用途用于火电厂、化工厂等工矿企业，再生净化抗燃油的专用设备。

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