1) Liquid nitrogen shrinking
液氮冷缩
2) liquid-nitrogen refrigerating
液氮制冷
1.
A series of Er 3+ /Yb 3+ co-doped BaF_2 powders with the same compositions were prepared at different sintering temperatures, and the samples were cooled by liquid-nitrogen refrigerating and air-cooling, respectively.
采用液氮制冷和空冷两种冷却方式制备了不同烧结温度的系列相同配方Er3+/Yb3+共掺杂BaF2粉末。
3) condensation by liquid nitrogen
液氮冷凝
1.
A simple and convenient method for extracting plant volatiles—condensation by liquid nitrogen;
植物挥发性物质提取的一种简易方法——液氮冷凝法
5) Fluid nitrogen cryopreservation
液氮冷冻
1.
Experimental study of effects of fluid nitrogen cryopreservation on immunogenicity of osteoblasts;
液氮冷冻对成骨细胞免疫原性影响的实验研究
2.
Objective: To investigate the effects of fluid nitrogen cryopreservation on the immunogenicity of osteoblasts.
目的:探讨液氮冷冻(fluid nitrogen cryopreservation)对成骨细胞免疫原性的影响。
6) subcooled liquid nitrogen
过冷液氮
1.
Quenching experiments from the underside of inclined and downward facing copper flat surfaces of 50mm in diameter and 20mm in thickness in subcooled liquid nitrogen were performed.
用直径为５０ ｍ ｍ 、厚度为２０ ｍ ｍ 的平板实验研究了倾斜平板在过冷液氮中的淬冷沸腾传热， 方位角为０°（热面水平向下） 到９０°（热面垂直）， 液氮过冷度为０～１３ Ｋ。
2.
Quenching experiments from the underside of inclined and downward-facing copper flat surfaces of 50mm in diameter and 20mm in thickness in subcooled liquid nitrogen were performed.
用直径为50mm、厚度为20mm的平板实验研究了倾斜平板在过冷液氮中的淬冷沸腾传热,方位角为0°(热面水平向下)到90°(热面垂直),液氮过冷度为0～13K。
补充资料：液氮(N2)
分子式：
CAS号：
性质：无色无臭的液体。相对密度0.808(-195.8℃)。熔点-209.8℃。沸点-195.8℃。在空气分离设备内除制造大量的氮气和氧气外，还可得微量的液氮。用于稀有气体的提制过程以及作为仪器或机件需要深度冷冻处理时的冷冻剂。
CAS号：
性质：无色无臭的液体。相对密度0.808(-195.8℃)。熔点-209.8℃。沸点-195.8℃。在空气分离设备内除制造大量的氮气和氧气外，还可得微量的液氮。用于稀有气体的提制过程以及作为仪器或机件需要深度冷冻处理时的冷冻剂。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条