此外，C4植物对水和氮气的需要量也较少。

They also use less water and nitrogen.

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表面活性剂本身燃烧时除了生成水、二氧化碳和氮气之外，不会生成其他的排放物。

The surfactant itself also burns without creating emissions beyond water, carbon dioxide and nitrogen.

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一种气体(通常为二氧化碳或氮气)与水和酸混合并沿井向下泵入的井增产处理。

A well-stimulation treatment in which a gas, usually carbon dioxide or nitrogen, is mixed with water and acid and pumped down a well.

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