However, bacteria fix the gas only when their population is high enough to trigger the quorum-sensing machinery.

然而，只有在细菌（根瘤菌）达到一定数量时引发群体感应机制才能进行固氮。

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The trigger effect of gas fluid, especially the important effects of special characteristics of ultra-critical fluid on the eruption of mining shocks are discussed.

进一步介绍了瓦斯流体对矿震的触发作用，尤其超临界流体的特殊性质在矿震发生中的重要作用。

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The circuit including the main welding circuit, shows the interface, watch dog circuit, sampling circuit, trigger, synchronous circuit and electromagnetism gas valve etc.

包括焊接主回路、采样电路、触发电路、同步电路、电磁气阀启动电路、显示界面以及看门狗等电路。

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The natural gas revolution should trigger a burst of entrepreneurial spirit across the nation as the incremental changes to our civilization should lead to a business revival and the dreams of new fortunes.

FORBES: The Ten Reasons To Love Natural Gas

Whittingham noted that, when heated up, the electrolytic solvent in the battery can turn into a flammable gas, which can potentially trigger a fire.

WSJ: The Science Behind Dreamliner's Batteries

However, bacteria fix the gas only when their population is high enough to trigger the quorum-sensing machinery.

ECONOMIST: Novel antibiotics