Cold trap using liquid nitrogen to achieve a constant input of rapid cooling, so that rapid nucleation of steam to ensure that the nanometer scale.
冷阱采用了不断输入液氮实现了急速冷却，使蒸汽快速成核以保证纳米尺度。
Cold trap using liquid nitrogen to achieve a constant input of rapid cooling, so that rapid nucleation of steam to ensure that the nanometer scale.
冷阱采用了不断输入液氮实现了急速冷却，使蒸汽快速成核以保证纳米尺度。
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