查询词典 reaction rate

The attitude control system is compared with a micro momentum-biased reaction wheel and three-axis magnetic-coil, to realize the followingfunctions:(1) after release from launcher, by B control law, this mode can damp the body rate down;(2) After that ADCS switches to the three-axis-stabilizing mode.

姿态控制子系统，以俯仰偏置动量轮组合三轴磁力矩器构成控制系统主体，实现初始入轨后的姿态角速率磁控阻尼，以及姿态的三轴稳定控制；分别对动量轮和三轴磁力矩器进行了参数设计。

The effect of pyrolysis conditions on the products yield of epoxy resin in waste printed circuit boards was investigated using the vacuum pyrolysis oven heated by temperature controller. The effects of temperature, heating rate, pressure and reaction time on the yield of vacuum pyrolysis production were analyzed.

在真空条件下，应用程序升温的管式炉反应器对废弃电路板中环氧树脂热解规律进行研究，考察不同的热解终温、升温速率、真空度及保温时间等各种因素对产物产率的影响。

Two models were developed, one for calculating the leakage rate of water from heat transfer tubes due to one broken double ended guillotine tube in the steam generator of LMFBR using the one dimensional method of characteristics, and anotherone for temperature, adiabatic spherical to columnar hydrogen bubble growth model in large sodium water reaction.

采用一维特征线方法建立了快堆蒸汽发生器单管发生双端断裂情况下，水从破裂传热管流出的泄漏率计算模型和钠水反应气泡从球状到柱状的变温绝热生长模型。沸腾是钠冷快堆安全分析工作中必须要考虑的一个问题，而堵流是众多导致发生沸腾原因中十分重要的一个。

METHODS: The changes of proliferation rate and differentiation in HL-60 cells treated with ICA or TSA were observed by MTT test, surface marker analysis and NBT reduction reaction, and the effects on cell cycle and nm 23 gene expression by flow cytometry and RT-PCR. RESULTS: After exposing to ICA or TSA, the proliferation was inhibited and the cells were induced to differentiation towards more mature monocytes.

通过MTT试验检测HL-60增殖分化变化，观察细胞形态，分析表面标志和硝基四氮唑蓝还原反应，观察HL-60细胞分化水平变化情况；通过流式细胞仪检测细胞周期的改变，RT-PCR检测nm23-H1、nm23-H2、G-CSF、c-myc基因表达的变化。

Distribution of reaction zones affects the heating value of producer gas and the rate of gas generation, as well as tar content and particulates.

气化炉内之反应区分布状况不但会对产气热值与产气率产生影响，同时也会影响焦油与粒子之生成量。

This reaction system can catalyze soybean oil and sunflower oil too,and the conversion rate was 83.51%and 88.57%respectively.

该反应体系可用于催化大豆油和葵花子油生产生物柴油，产率分别为88.57%和83.51%。

In the batch reaction with high ratio of substrate to catalysts, the rate ?controlling step was determined by measuring the concentration variation of produced L-alanine in solution.

在近似无限浴的条件下，通过测量间歇拆分反应产生的L-丙氨酸的浓度变化规律，判断反应过程中的速率控制步骤。

The morphological changes in the steam-treated straw were characterized by scanning electron microscopy. It is proposed that the use of the ball mill shaker both reduces the degree of inhibition of the enzyme by reaction products and increases the rate of adsorption and desorption of the enzyme on the substrate.

用环境扫描电镜观察三种不同方式酶解后的汽爆麦草的形态，经分析发现，钢球振荡还有助于减少产物对酶的抑制和提高底物对纤维酶的吸附和解吸频率。

The temperature rising mechanisms of manganese carbonate fines containing coal by microwave heating were discussed. The results show that, manganese carbonate fines containing coal have good characteristics of microwave heating and self-reduction. At the molar ratios of C atom to O atom as 1.1, 1.2 and 1.3 in the mixed materials, the averaged maximum temperature-rising rate of the mixed materials by microwave heating is 140.7 K/min at 1 473 K with the microwave frequency of 2.450 GHz. At the different containing coal ratios and heating temperatures, the value of the dielectric constant is big, 5.5, but that of the permeability is about 1, so the mixed materials belong to dielectric loss. The temperature rising performance depends chiefly upon the electromagnetic performance of materials, whose change is caused primarily by the chemical reaction, the changes of crystal structural , and the changes of defects state. The bigger the containing coal ratio, the better the absorptivity of microwave. At the same containing coal ratio, the higher the heating temperature, the weaker the absorptivity of microwave.

研究结果表明：含碳碳酸锰矿粉具有优良的微波加热特性和自还原性；在微波加热频率为2.450 GHz、碳氧原子摩尔比分别为1.1，1.2和1.3时，微波加热混合物料至1 473 K的升温速率平均最高达到140.7 K/min；不同的加热温度和配碳比下混合物料的介电常数较大，都在5.5左右，而磁导率为1左右，属介电损耗型；微波加热含碳碳酸锰矿粉的升温性能主要取决于含碳碳酸锰矿粉的电磁性能，而电磁性能的改变主要是由物料加热过程中产生的化学反应、晶体结构变化及缺陷状态的改变引起的；配碳比提高，物料吸收微波的能力有所提高；在相同的配碳比下，加热温度升高，吸收微波的能力有所减弱。

Rate of ressociation of DNA fragments is a second-order reaction.

DNA片段再结合的速度是一个次级反应。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。