Though indigenous rainforest dwellers of South America have been using rubber for generations, it was not until 1839 that rubber had its first practical application in the industrial world.

虽然南美洲土生土长的雨林居民世代使用橡胶这种东西，可是直到1839年橡胶才在工业化世界中得到了最早的实际运用。

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It gained greater currency in the first half of the nineteenth century when industrial civilization began to be transformed by the application of steam power.

在十九世纪上半叶，蒸汽动力的应用开始改造工业文明时，进步这一观念为更多的人所接受了。

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At present this technology has not reached the practical industrial application level and it has many issues to be studied.

目前，活性炭烟气脱硫脱氮技术还没有达到工业实际应用水平，仍有许多问题有待研究。

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With any luck the tech should hit the market sometime during 2015, but it'll be primarily for office and industrial application at first -- so don't start tossing your CFLs just yet.

ENGADGET