反应速率

During the process of consecutive first-order reaction, the trend of the intermediate is largely determined by the ratio of the rate coefficient; therefore this case leads to an important method:steady-state approximation.

在连续反应中，速率系数的比值很大程度上决定了中间产物浓度的走向，并由此引出了一个重要的方法：稳态近似法。

In the potential range of -0.2～+0.8V,at scan rate of 1mV/s in 1mol/L Na_2SO_4 aqueous electrolyte,the synthesized NiO material prepared by pH sulotion of 11.7 and heat-treat temperature of 500℃and heat-treat time of 8h has a high specific capacitance of 38.2F/g.

比较不同工艺条件制备的NiO材料，发现反应溶液pH值等于11.7、热处理温度500℃以及热处理时间8h的NiO电极材料比容量最高，在1mol/L Na_2SO_4溶液、-0.2～+0.8V扫描电位内，1mV/s扫描速率下达到38.2F/g。

Therefore, design of melt flow rate and isotactic are accurate,polyreaction operates parameter are feasible.

由此说明，BOPP-D1 产品的两个基本物性指标：熔体流动速率、等规度的确定是准确的，聚合反应操作条件是合理的。

The apparent electrochemical rate constant kobs of Azo SAM decreases with increasing assembling time that is attributed to increasing packing-density of Azo in the monolayer.The close packed structures in Azo SAM restrict the conformation change of azobenzene units in the film so that it leads to a decrease of its electrochemical activity.

Azo自组装膜的电化学反应表观速率常数kobs随组装时间的延长而明显减小，反映出自组装膜的排列随时间延长而趋于更加致密，从而抑制了偶氮苯基团的电化学诱导构型转化，降低了其电活性。

PSⅡmaximum efficiency, quantum efficiency of PSⅡ,PSⅡoperating efficiency and electron transfer rate of leaf in the light-adapted were increased withyear of release.

髓品种育成年代增加，剑叶光适应条件下的Fv′／Fm′、Φ_、qP和ETR增加，即PSⅡ的激发能捕获效率、光化学量子效率度、反应中心的开放程和电子传递速率都增加。

Some electrochemical parameters involved in the redox reaction of lincomycin, such as parameter of kinetic nα, standard rate constant ks and the number of H~+, were also calculated.

试验研究计算了林可霉素在电极界面上的电子转移数、动力学参数及标准速率常数以及参与电极反应的H~+数目等。

Malolactic fermentation is a very important processing technology for deacidificaton in modern winemaking.

苹果酸乳酸发酵是现代葡萄酒酿造工艺中重要的生物降酸手段。MLF是L 苹果酸在乳酸菌的苹果酸乳酸酶催化下转变成L 乳酸的酶促反应过程，该过程没有底物水平的磷酸化，但在MLF过程中苹果酸确实能够刺激细菌的比生长速率，增加细菌生物量。

Design of air exhaust system by vacuating from cavity for injection mould;2. Also the measures to improve the air exhaust and to solve the non equilibrium problems of sprue-runner system were proposed.

采用CAE模拟技术，运用Moldflow的反应性注射成型模块功能，以热固性塑料线圈骨架为研究对象，对影响塑件成型的因素，如模具温度、熔体温度、注射时间和速率、保压时间和压力等进行了分析，提出了改进排气的措施，解决了模具中不平衡流道系统的流动平衡问题。

The results showed that the maximum photochemical efficiency, quantum efficiency of PSII photochemistry, the electronic transfer rate, the photochemical quenching of the grafted seedling were lower than those of the own-root seedling in the 20 days after planting.

定植后20d，嫁接苗的最大光化学效率、PSⅡ光合电子传递量子效率、光合电子传递速率、光化学猝灭系数低于自根苗；定植后30、45、60d，嫁接苗Fv/Fm、ΦPSⅡ、ETR、qP及开放PSⅡ中心激发能捕获效率高于对照，而非光化学猝灭系数低于对照。20d时，嫁接苗吸收的光能用于光化学反应的能量比例低于对照；但30d后，θPSⅡ显著升高，45d时超过70%，而自根苗只有60%。

The rate of the chemical reaction depends upon various factors, including the concentration of the two reactants.

这个化学反应的速率取决于多种因素，包括两种反应物的浓度。

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％。