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For the first time we parametrize such a flow with two physical constants, namely the specific angular momentum accreted by the black hole j and the energy quantity K.

我们首次应用两个物理常量，即角动量积分常数j和能量参数K给出了含激波的吸积流解对应的参数空间。

Then GaN nanostructured thin films comprised of regular hexagonal crystal grains have been successfully synthesized by ammoniating Ga2O3 films at the temperature of 850℃ for 15 rain in a quartz tube. X -ray diffraction reveals that the synthesized GaN is of a hexagonal wurtzite structure with lattice constants a =0.318 nm and c =0.518 nm.

然后将硅基Ga2O3置于管武石英炉中，在850℃的氨化温度下氨化15min后，成功制备出GaN薄膜，该薄膜由正六边形的晶粒组成。X射线衍射表明GaN具有六方纤锌矿结构，晶格常数为a=0.318nm和c=0.518nm.X射线光电子能谱的测试确定了样品中Ga-N键的形成，并且Ga和N的化学计量比为1：1。

The effect of different substrate biases and different proportional difference constants on the results have also been discussed.

实际测量中不同衬底条件和不同的比例差值常数对提取参数的影响也作了分析。

The time constants charactered by different measurement techniques were studied and compared.

详细分析和比较了电荷的传输及转移过程对时间常数的影响。

The dielectric constants and conductivities of superficial tissues inside the body can be achieved by noninvasive measurements outside the body.

对人体背部电特性的重建，为该方法在临床医学方面的应用奠定了一定的基础。

Rate constants, correlation coefficients, equilibrium adsorption capacities and kinetic parameters, for each kinetic equation were calculated and discussed. It shows that the adsorption of MB onto industry debarked hemp could be described by the pseudo-second-order equation.

在不同初始浓度下，运用准一级动力学方程和准二级动力学方程对数据进行拟合，并计算和分析速率常数、相关系数、平衡吸附量和动力学参数，说明吸附过程符合准二级动力学方程。

Through a variety of resin filter, adsorption and elution conditions for the optimization, as well as decolorization, crystallization methods of research, this article eventually determine the strong acid cation resin HZ-001 which is at pH 3, 3BV / h, having the largest adsorption to the tryptophan; the fermentation broth were centrifuged to remove sediment,then treated with activated carbon to be decolored and then treated with strong acid cation resin HZ-001. After that,2mol/l amino acid were passed through the HZ-001 ion exchanging column,kept almost constants when the flow rate stayed 6 BV / h. At 60℃,it was condensed into the saturated state and then added Ethanol until its percentage reaching 30%. At 4 ℃ under 100rpm placed in the shaker 20h, the collection of L-tryptophan was dried up in vacuo.

本文通过对种树脂的筛选、吸附和洗脱条件的优化，以及对脱色、结晶方法的研究与摸索，最终确定强酸型阳离子树脂HZ-001在pH=3，3倍床体积流速，温度室温，对色氨酸有最大的吸附作用；将发酵液离心去沉淀并用活性炭脱色后通过HZ-001强酸型阳离子交换树脂柱，再用2mol/L的氨水6倍床体积流速在室温下进行洗脱，收集洗脱液，60℃浓缩为过饱和状态后加入30%无水乙醇，4℃下100rpm摇起晶20h，过滤搜集结晶并真空干燥得白色粉片状L-色氨酸晶体。

The formation constants and enthalpies of coordination reactions were calculated using computer program made by ourselves.

借助计算机用自编程序算出了配位反应的生成常数和焓变，进而算出了配位反应的自由能变化和熵变化。

The apparent activation energies and reaction rate constants of clinker formation reaction were also got in this study by Gentling and Arrhenius equation.

此外，利用金斯特林格和阿仑尼乌斯方程得出了熟料形成反应的表观活化能和反应速率常数。

As for dopamine, it intercalates into the double helix of DNA in the concentration range of 5.00×10^(-5) to 9.00×10^(-4)mol/L. The binding constants of dopamine, adrenaline and dobuamine with DNA are determined as 1.55×10^3, 9.77×10^3 and 1.74×10^4L/mol, respectively, by electrochemical method.

对于多巴胺，在5.00×10^(-5)~9.00×l0^(-4)mol/L范围内，它与DNA之间主要为插人作用，同时，采用电化学方法测得多巴胺、肾上腺素和多巴酚丁胺与DNA之间的表观结合常数分别为1.55×10^3，9.77×l0^3和1.74×10^4L/mol。

We are forbidden from giving money to these shoeless, skinny children, as this will perpetuate begging.

向光着脚，骨瘦如柴的孩子施舍是不可以的，因为要招来无休无止的乞讨。

It would be hard not to fall victim to some sharpeyed policeman.

要想不被某个目光锐利的警察抓到，谈何容易。