过冷

If cylinder does subcool, close valve and allow cylinder to warm up.

如果钢瓶没有过冷，关闭阀门让钢瓶升温。

If cylinder does subcool, close valve and allow cylinderto warm up.

如果钢瓶没有过冷，关闭阀门让钢瓶升温。

Plots of molar volume verses temperature are linear for all samples in the stable liquid region, but there is an increase in the slope〓 with decreasing temperature in the supercooled liquid region, analogous to that observed for C〓 in similar alkali titanosilicate liquids.

将摩尔体积对温度作图，在稳定的液体区内两者为线性关系，随着温度的降低到达过冷液相区，摩尔体积对温度的斜率升高，类似于在相近的碱硅酸盐熔体中观察到的热容的异常现象(Richet and Bottinga，1985；Lange and Navrotsky，1993；Tangeman and Lange，1998)。

A new heat storage material (CH3COONa·3H2O) with a phase change temperature of 55℃ and a sub-cooling temperature of less than 2℃ was developed. This sodium acetate trihydrate based material was obtained by a number of experiments for selecting proper nucleation catalysts and suspension mediums.

以三水醋酸钠(CH3COONa·3H2O)为蓄热基质，通过大量实验，遴选合适的抗沉淀剂和成核剂，配成相变温度约55℃、过冷度小于2℃的蓄热材料。

Furthermore, the width of computational domain, the nucleation undercooling of peritectic phase and initial composition affect the extension of trijunction of directionally solidified peritectic alloy directly, and also the final microstructure.

并且， 计算域宽度、包晶相形核过冷度和初始成分直接影响到定向凝固包晶合金三相交节点的延伸，也就影响到其最终的微观组织。

The unetched specimens were instantly observed by QUANTA-400 environment scanning electron microscope,scanning tunnel microscope and optical microscope,respectively.The results show that the surface relief will be found during the bainite transforming and will be in the shape of "Λ".The formation of bainite surface relief is to ...

不经浸蚀，分别采用QUANTA-400环境扫描电镜、Nanofrist-1000扫描隧道显微镜和光学显微镜观察试样，发现，贝氏体相变过程中产生了表面浮凸，表面浮凸为&帐篷形&，并认为贝氏体表面浮凸的产生，是由于过冷奥氏体转变为贝氏体时比体积增大，且试样表面层体积膨胀不均匀造成的。

Found that because the narrowness of the channel, compared with large channel, there have a great difference in bubble behavior and relative character, when used Bowering relation to predict theONB point, this paper given a correlation of C1 = 103.736 Res -0.8 Eu-0.123 to modify theBowering relation to consider the influence of flow velocity and pressure on ONB point.

发现由于流道狭窄，汽泡行为及相关特性等与大流道相比有很大不同，使用Bowering关系式预测过冷流动沸腾起始点时，本文提出了一与流道内的流速和压力条件紧密相关的修正系数C_1，得到了关系式C_1=10~(3.736) Re_s~(-0.8) Eu~(-0.123)，弥补了Bowering关系式中没有考虑流速和压力等因素对沸腾起始点影响的不足。

ONB ; Bowering Model ; Two-phase flow ; narrow rectangular channel

过冷沸腾起始点； Bowering模型；两相流；窄缝流道

The experiment results show that chocking occurs when downstream pressure decreases below the saturation pressure corresponding to upstream temperature and the mass flow rate of refrigerant becomes almost independent of downstream pressure.

试验结果表明，当节流短管的下游压力小于上游温度所对应的饱和压力时，制冷剂出现壅塞现象，此时制冷剂流量不再受下游压力变化的影响；上游压力、上游过冷度、短管直径对制冷剂流量的影响较大。

In order to investigate theinfluence of nitrogen on the transformation characteristics, carburized samples with prac-tically the same carbon content as the cyanided ones were also prepared and examined.

为了探索氮对过冷奥氏体转变特性的影响，还将这两种钢进行了固体渗碳处理，使渗碳试样具有和高温氰化试样实际上相同的含碳量，然后将二者进行了平行试验。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。