There are C3 and C4 cycle in the wheat cycle system and the key enzyme activity affects the first step reactions directly in photosynthetic carbon cycle.
在小麦碳循环体系中C3和C4途径共存，而这两个途径中的关键酶的活性的大小直接影响到光合碳循环的第一步反应。
A process for increasing the yield of C3 and C4 olefins by injecting light cat naphtha and cat cycle oil together with steam into an upstream reaction zone of a FCC riser reactor.
通过将轻催化石脑油和催化循环油与水蒸汽一起注入FCC提升管反应器的上游反应区提高C3和C4烯烃产率的方法。
We have commenced with PRC on large scale C4 CO2 sinks to reverse deserts and restart Carbon and trace element cycle aiding in restarting the rain cycle.
我们已经同中国就C4二氧化碳方面开展了大规模的合作，以期通过改善荒漠、重启碳和微量元素循环，来重新开始雨循环。
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