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。
Water-cooling specialist Koolance released its first liquid-nitrogen evaporator.
知名水冷厂商Koolance发布了旗下首款处理器用液氮蒸发器产品CPU-LN2 。
A novel contact cooling method suitable for the vitrified cryopreservation of skin is proposed and comparison is made with the cooling method using liquid nitrogen.
提出一种适用于皮肤低温保存的快速冷却方法，并与目前使用的快速冷却方法进行了比较。
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。
Without cooling the gain medium in liquid nitrogen or using gratings and complex, expensive devices, this fiber laser has the advantages of being simple and easily attainable at a low cost.
这种装置无需将增益介质放在液氮中，也不需要多个光栅选频或其他复杂而昂贵的器件，具有结构简单，易实现和成本低等优点。
Without cooling the gain medium in liquid nitrogen or using gratings and complex, expensive devices, this fiber laser has the advantages of being simple and easily attainable at a low cost.
这种装置无需将增益介质放在液氮中，也不需要多个光栅选频或其他复杂而昂贵的器件，具有结构简单，易实现和成本低等优点。
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