速率

Heat release is a measure of the contribution that a burning material makes to a fire in progress, for example, a high rate of heat release will produce a high rate of rise of temperature in surrounding unburnt material and accelerate fire spread.

放热是易燃材料在燃烧过程中所起作用的衡量尺度。打个比方，高速率的放热将对不完全燃烧的材料产生了高速率的升温并且加速了火焰的蔓延。

Chemical composition can influence the temperature range of alloys in uncompensated stage.

抽拉速率的提高可以增大合金凝固末期收缩速率，加大合金热裂倾向。

We want to go on and measure the rate of molecular evolution for humans, as well as doing more work with moa and Antarctic fish to see if rates of DNA change are uncoupled in these species.

我们想要进一步检测人类的分子进化速率，对于恐鸟和南极鱼类也有做更多研究的打算，想看看这些物种的DNA和形态的进化速率是否分离。

Based on the analytic results, suitable thresholds can be determined according to the system parameters, including the probability of buffer underflow, the probability of buffer overflow and the average playout rate.

该算法改进了Yuang的算法，根据接收端缓冲区的占用情况来动态地调整媒体的播放速率，媒体内同步的要求决定了媒体播放速率的变化范围。

The results showed that:Under NaCl stress,the reductions in the shoot and root dry weight, leaf area,stem diameter of grafted plant were lower than those of ungrafted plants.The Na~+ content,Na~+/K~+ ratio,Na~+/Ca~(2+) ratio in the leaf and scion stem of grafted plants were lower whereas those of in the rootstock stem ad root were higher than in ungrafted plants. The K~+ contents,soluble sugar contents,shoot water contents,SOD,POD,CAT,APX activity,the stability of AsA/DHA,Photosynthetic rate,transpiration rate and stomatal conductance were higher,whereas the MDA contents in the leaf of grafted plants were lower than that in ungrafted plants.The reductions in leaf area and stem diameter of grafted \'Jinchun No.2\' plants were more severe than those of grafted \'Zaoduojia\' ones.

结果表明，盐胁迫下，嫁接苗地上部和根干重、叶面积、茎粗降低的程度显著低于自根苗；嫁接苗叶片和接穗茎中Na~+含量和Na~+/K~+、Na~+/Ca~(2+)比值显著低于自根苗，而砧木茎和根中的Na~+含量和Na~+/K~+、Na~+/Ca~(2+)比值显著高于自根苗；嫁接苗叶片中K~+含量、可溶性糖含量、地上部含水量、SOD、POD、CAT、APX活性、AsA/DHA的稳定性、光合速率、蒸腾速率、气孔导度显著高于自根苗，MDA含量显著低于自根苗。

The results showed that the curves of the daily net photosynthetic rate,the daily transpiration rate and the daily water use efficiency of 4 plants were all unimodal.

结果表明，4种幼苗的净光合速率日进程、蒸腾速率日进程和水分利用效率日进程均呈明显的单峰曲线。

The reaction rate was mainlyinfluenced by temperature but nearly uninfluenced by concentration of H2S and particle scaleswhen they were small.

温度对预硫化反应速率的影响较为显著；在较低的硫化氢浓度和较小的催化剂粒径范围内，预硫化宏观反应速率几乎不受二者的影响。

In the first part, it was investigated the interaction between Pb2+ and La4Ti9O24 ceramic bulk. The result shows that a significant Pb2+ diffusion into La4Ti9O24 ceramic bulk and a significant crystallization of the La2/3TiO3-type phase is clearly observed in the Pb2+ diffusion layer. The reacted zone consists of the La2/3TiO3-type phase exhibits the linear dependence of the square of the thickness, x, on the heat-treated time, t, in excellent agreement with the parabolic law x2 = kt, where k is the growth rate coefficient. The kinetic study thus indicates that the Pb2+/La4Ti9O24 interaction strictly obeys the theory of the reactive diffusion. Furthermore, the experimental k values were used to determine the associated activation energy, Ea, for the formation of La2/3TiO3-type phase using the Arrhenius plot and the following least-square equation, ln =-Ea/RT + A, where T is the annealing temperature, R is the universal gas constant, and A is a constant, resulting in Ea ~ 607 ?b 60 kJ/mol.

首先， 以巨观的方式观察PbO与La4Ti9O24陶瓷体介面的反应现象；利用X-ray绕射分析以及扫描式电子显微镜来观察不同的热处理温度以及不同的持温时间所制作的样品，研究结果发现， Pb2+离子会渗入到La4Ti9O24陶瓷内，同时在Pb2+离子所渗入的区域内会产生新的La2/3TiO3-type钙钛矿斜方晶相；藉由量测不同温度与时间之样品，其因Pb2+离子渗入而产生之La2/3TiO3-type相层厚度之关系，符合反应式扩散机制中 x2 = kt 之关系式(其中 x：扩散层厚度； k：反应速率常数； t：反应时间)；进一步将不同实验条件所得到之反应速率常数值代入Arrhenius方程式ln (k =-Ea/RT + A ，其中Ea：活化能； T：绝对温度； R：气体反应常数； A：常数，可以求得Pb2+离子与La4Ti9O24陶瓷发生反应式扩散所需之活化能为607 ± 60 kJ/mol。

Through the model of potential stem sap flow rate, there was unobvious difference comparing with the survey data, so the model was better.

通过模型预测枣树的潜在茎流速率，发现与实测茎流速率基本一致，预测效果较好。

The result indicates that for Ti-1300 alloy, rheological phenomenon easily occurs under the condition of high rate of strain which leads its unstableness.

对热变形后的组织进行分析可知，在低应变速率下，主要发生动态再结晶；在高应变速率下，主要发生动态回复。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。