Cooling the sample from room temperature (290k) to liquid nitrogen temperature (77k) decreases the voltage noise by approximately a factor of two.
将样品从室温温度(290k)降低到液氮的温度(77k)，可以使得噪声电压减小大约一半。
When water was replaced by liquid nitrogen, clusters of single-walled carbon nanohorns (SWCNHs) were obtained due to the chemical inertia and the strong cooling effect of liquid nitrogen.
将放电介质由水改为液氮，凭借其化学惰性和超强的冷却作用得到了单壁碳纳米角团簇。
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