Currently, the main production methods of chloroprene rubber include acetylene process and butadiene-based.

目前，氯丁橡胶的生产方法主要有乙炔法和丁二烯法。

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The main methods for hydrogen production currently are introduced. And production mechanism by photosynthetic microbe was described.

介绍了目前制氢的主要方法，光合微生物制氢被认为是最具潜力的氢能生产技术之一。

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Currently, mangos are one of the main fruits marketed globally, ranked fifth in world production among the major fruit crops.

目前，芒果是一种全球销售性水果，产量在全球范围内位居第五。

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Currently, its main economic revenues come from the production of coffee and pineapple.

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