速率

The conclusions can be drawn through numerical simulation: The hydrate-forming region becomes small with increasing circulation rate and inhibiter concentration, and it is possible to make the hydrate-forming region away from sea floor by increasing circulation rate and inhibiter concentration, thus preventing blowout preventer lines from hydrate plugging; the decrease in gas volume fraction in the annulus due to hydrate formation reduces pit gain, which can delay the detection of well kick; the possibility of hydrate presence at a relatively low gas production rate is much greater than that at a relatively higher production rate; the bottom hole pressure is affected little by hydrate phase transition, and it is allowable not to consider hydrate phase transition when the bottom hole pressure is calculated; shut-in casing pressure cann't truly reflect gas kick due to hydrate formation and the situation is getting worse with time

模拟计算结果表明：溢流期间，天然气水合物的生成区域会随着循环流量的增大或抑制剂浓度的提高而减小，可通过增大流量和抑制剂浓度使水合物的生成区域脱离海底，减小防喷器管线被堵塞的危险；水合物的生成使环空中气体体积分数降低，泥浆池增量减小，给溢流检测带来延迟；当检测到有气侵发生时，水合物藏分解速率比较小时，井筒中生成水合物的可能性要比分解速率大的情况下更为严重；水合物相变对井底压力的影响较小，在工程中计算井底压力时可以忽略；由于天然气水合物的生成使得关井套压值不能真实反应气侵情况，而且随着时间的增加情况会更加严重。

Instantaneous current efficiency of the electrochemical oxidation process of Cr~(3+) in the absence and presence of ultrasound was studied in a divided electrochemical cell.

研究结果表明：在有超声作用和机械搅拌条件下，蒽的转化率和反应速率均比无超声作用时高，且超声作用下的转化率和反应速率又高于机械搅拌。

With the efforts of pre-processing interelectrode electrical parameters, discharge voltage and discharge current, the data acquisition system is qualified only if it can gather signal with frequency of 2MHz, the maximum frequency the pulse power source can generate.

通过对待测信号的调理，使采集系统的任务降到只需以微细电火花脉冲电源的脉冲速率进行采样即可，即速率要求为2 MHz。

Using Agilent 8453 ultraviolet-visible spectrophotometer, the affecting factors were studied on the kinetic processes in iodometry involved in the volatilization of iodine and the oxidation of iodide ion by dissolved oxygen, in particular such as the shape of the vessel, the volume of the solution tested, the concentration of KI and the temperature and the acidity of tested solution.

利用紫外－可见分光光度仪测量了I2挥发、I在酸性介质中被溶解氧氧化的动力学过程，着重研究了容器形状、溶液体积、KI浓度、温度等因素对I2挥发速率的影响以及溶液酸度与I氧化反应速率的关系。

During the isothermal constant strain rate compression process, the effect of deformation heating on flow stress increases with increasing equivalent strain rate.

在等温恒应变速率压缩过程中，随着等效应变速率的增大，变形热效应对流动应力的影响程度增大。

By decreasing the concentration of (NH4)2SO4 from 3 g/L to 0.5 g/L in batch culture, the forming rate of jarosite was decreased by 50%, while Fe2+ oxidation rate was hardly affected.

结果显示：在三种方法中，降低(NH4)2SO4浓度是比较可行的一种方法，当(NH4)2SO4从3.0 g/L降低到0.5g/L，Fe2+氧化速率几乎没有受到影响，沉淀形成速率却减少了45%。

The results showed: among the three methods, decreasing the concentration (NH4)2SO4 was more feasible than two others. By decreasing the concentration of (NH4)2SO4 from 3 g/L to 0.5 g/L in batch culture, the forming rate of jarosite was decreased by 50%, while Fe2+ oxidation rate was hardly affected.

结果显示：在三种方法中，降低(NH4)2SO4浓度是比较可行的一种方法，当(NH4)2SO4从3.0 g/L降低到0.5g/L，Fe2+氧化速率几乎没有受到影响，沉淀形成速率却减少了45%。

The results showed: among the three methods, decreasing the concentration (NH4)2SO4 was more feasible than two others. By decreasing the concentration of (NH4)2SO4 from 3g/L to 0.5g/L in batch culture, the forming rate of jarosite was decreased by 50%, while Fe(superscript 2+) oxidation rate was hardly affected.

结果显示：在三种方法中，降低(NH4)2SO4浓度是比较可行的一种方法，当(NH4)2SO4从3.0g/L降低到0.5g/L，Fe(上标 2+)氧化速率几乎没有受到影响，沉淀形成速率却减少了45%。

A slim azimuth 20 independent-arm caliper logging tool;2. Design of TFY-1 universal azimuth jointer with a restrained gyroscope;3. The pit shaft parameters of the elevation angle,the azimuth angle,the tool of facial angle and so on are obtained after the computation.

陀螺测斜技术以动力调谐速率，陀螺测量地球自转角速率分量和石英加速计测量地球加速度分量为基础，经计算得出井筒的倾斜角、方位角、工具面角等参数。

Due to adsorption on kieselguhr, lipase became harder to combine with R-2,4-DP and the reaction rate of hydrolysis decreased. On the other hand, it was easier for S-2,4-DP to get close to the active sites of lipase, so the rate increased.

吸附在硅藻土上的脂肪酶，与R-2，4-DP结合更为困难，反应速率下降；而S-2，4-DP接近酶反应中心更加容易，反应速率上升。

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。