低温冷却的

The model of heat and mass transfer of a biological sample in cryopreservation was solved by perturbation and integral methods.

用摄动法和积分法求解了生物样品的传热传质模型，在模型简化时比较了积分解和精确解，探讨了低温保存中细胞的损伤机理，对冷却介质温度随时间线性变化时相变界面的移动作了实验研究，用自己设计和制作的实验台架和测试装置测量了相变界面的移动和温场的分布。

The high-concentration CaCl2 solution has wonderful characteristic in low temperature and its price is low.

高浓度的氯化钙溶液具有较好的低温特性，且成本低廉，在准封闭体系中的碳酸盐沉积很少，具有在冷却循环系统中应用的基本条件。

It is shown that the microstructure of ZJ510L is refined by increasing the rolling pass and the cooling rate. The size range of final ferrite is about 5-6μm. Precipitates consist mainly of Al2O3, MnS, AlN and lots of carbonide particles, and their size range is about 20-150nm. It is verified that ZJ510L steel possesses a good combination of strength and plasticity due to its fine microstructure and has excellent formability and notched bar impact strength.

通过光学显微镜、透射电镜和力学性能实验研究表明：ZJ510L显微组织随著轧制道次和冷却速度的增加而细化，最终铁素体晶粒尺寸约为5~6μm；析出的第二相粒子主要为Al2O3，MnS和AlN以及大量的碳化物，尺寸大多在20~150nm之间；成品板强度和延伸率较高，并具有良好的成形性能和低温冲击韧性。

XRD, 29Si, 27AI MAS NMR, the adsorption of nitrogen at low temperature,129Xe NMR, XPS, IR-TPD, NH3-TPD, the high vacuum volumetric analysis and pulse flow microreaction were used to study the difference in structure and property between the US-SSY zeolites obtained by quick and slow cooling after treating SSY zeolite with steam at high temperature.

应用X射线粉末衍射、29Si、27Al魔角旋转核磁共振、低温氮吸附、129Xe核磁共振、X射线光电子能谱、程序升温脱附和脉冲微反等多种物理、化学手段，详细考察了经高温水蒸汽处理后的超稳Y分子筛在急冷和自冷过程中产生的结构和性能差异，结果表明，冷却速率是制备分子筛必要的控制因素

To obtain a comprehensive evaluation of cold hardiness of the red imported fire ant, Solenopsis invicta Buren, the super cooling points of different casts at developmental stages and the ability of workers to survive at low temperature were measured based on materials collected from S.

为综合评价红火蚁Solenopsis invicta Buren的抗寒能力，依据2005-2006年在深圳野外获得的红火蚁自然种群测定了其不同品级及虫态的过冷却点和低温处理后的存活率。

For each type of sample investigated, the crystallization exotherm became wider and shifted towards lower temperature range with increasing cooling rate.

结果表明，随着冷却速率的增加，每个试样的结晶放热曲线均变宽，并向低温区移动。

Generally speaking, studies of boiling have been concentred on the was pool boiling and the forced-convective boiling inside tubes.

生物样品的淬冷是指将样品以较快的速度弹射入低温互质中进行快速冷却。

The lucky winner of the prize promoting the revamp of New Scientist magazine won't be able to collect the award until death when he or she will be cooled to a temperature at which decay of the body stops and then suspended in liquid nitrogen in a state known as cryonic preservation.

届时获奖者的身体将被冷却到足以停止身体腐坏过程的低温，然后被悬浮在液氮中，进入冷冻保存状态。

Harbin Institute of Technology, Harbin 150001, China）Abstract: The modified layers by O2-PBII technology on Ti6Al4V alloy surface were studied using X-ray photoelectron spectroscopy. The negative pulse voltage of 10, 20, 30 kV was applied to the sample, which was mounted on an oil-cooled sample holder. The results show that the thickness of the oxide layer increases with increasing implanted ion energy.

摘 要：采用等离子体基离子注氧技术（O2-PBII）对Ti6Al4V合金进行了表面改性处理，实验过程中改变注入离子能量的工艺参数，负脉冲偏压分别为10、 20、 30 kV，离子注入过程中样品台通油冷却以实现低温注入；用XPS对离子注氧层的深度、成分及化学结构进行了系统的分析。

In this study, we use the thermoelectric cooler whose surface temperature can be controlled by adjusting the direction and magnitude of its current to improve the cold stage and cooling system of a cryomicroscope system. The temperature control circuit and the integrated software were also elaborated to make the cryomicroscope a modular system which is convenient to use.

本研究利用调整热电致冷晶片的电流大小与方向即可控制表面温度升降之特性，将其应用於低温显微镜系统的冷冻台及冷却系统改良设计，同时配合温控电路与软体程式达到升降温之控制，最后并将整个系统模组化以增加使用上的便利性。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。