采用液氮冷冻法制作狗股骨头缺血坏死模型，将细胞骨材料复合物植入缺血坏死股骨头内。
The avascular necrosis model was made on left femoral head by use of liquefied nitrogen. The expression of VEGF165 gene was examined by immunohistochemical method.
采用液氮速冻，探讨在不同冻结条件下鸡油菌的冻结温度曲线及冻结温度与解冻后鸡油菌的汁液流失率之间的关系。
The cantharellus cibarius freezing technics was studied through analyzing the freezing curve at different temperature, freezing speed and juice leakage by liquid nitrogen flash freezer.
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.
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