查询词典 nuclear reactor

Agitation system of pyrolusite pulp: a ratio of the agitation diameter to reactor diameter : d/D= 0.35; a ratio of distance of agitation from the bottom of reactor to agitation diameter : y/d=0.5; agitation rate of 500～600r/min.

矿浆搅拌系统：采用上旋式搅拌器；搅拌器的直径d与反应器直径D之比为d/D=0.35；搅拌器下端离反应器底部的距离y与搅拌器直径d之比为y/d=0.5；搅拌转速500-600r/min。

Problems existed in a micro-reactor evaluation unit were analyzed, some improvements were also made including feeding method from liquid to gas, replacing stainless steel wire mesh in reactor with special quartz sieve plate , decreasing pipeline in collective system and replacement of pressure water method by vacuum dehydration.

分析了旧微反应评价装置存在的问题，并对其进行了如下改进：进料方式由液体进料改为气体进料；反应器内原有的不锈钢丝网用定制的石英筛板替换；收集系统减少了管线，并用真空吸水法替代了压水法。

New in this thesis, the magnetic field and reactance of shell-type air-core reactor and neutral grounding reactor are calculated by using the finite element method.

在分析中性点接地电抗器结构特点的基础上，通过对实际物理模型的合理简化，建立了二维轴对称有限元计算场域模型。

The main Restructuring of the core reactor is carried out in four.the normal operation of a reactor are closely related to the stability and product quality.

重整装置的核心反应主要是在四个反应器中进行，每一个反应器的正常运行都与产品质量的稳定密切相关。

How to cool down the reactor core after it is shutdown is one of the most important safety problems for China Advanced Research Reactor.

停堆后冷却问题是中国先进研究堆重要的安全问题之一。

Five minutes after the reactor scram, with reactor period stable at

在急停五分钟后周期在负

The change of average size of products along the radius at the exist of reactor has also been calculated. The calculated results indicate that the residence time is longer, the average size of products is larger, but the distribution of size is narrower, tending to self-preserving distribution; when the concentrations of reactants increase, the average size of products becomes larger, but the distribution of size becomes narrower; the gradients of reactants are greater, the average size is larger; the increasing of reacting temperature will cause the size of product to be larger under same residence time. The average size of product at the exist of reactor varies along the radius, has a maxim value.

模型计算结果表明，产物粒度随停留时间的增加而增大，但粒度分布变窄，趋向自保分布；产物粒度随反应物进料浓度的增加而增大，粒度分布随进料浓度的增大而减小；反应器中反应物浓度梯度较大（相当于化学反应为快反应）时，相同停留时间下所得到的产物平均粒度增加；反应温度的增加，粒子平均粒径增加，粒度分布变窄；反应器出口处粒子平均粒径，随着与对称轴的距离的增加，有一极大值，先增加，后减小。

A measuring approach of pressure oscillation has been developed and experiments are conducted in a 10 liter two-dimension air-lift loop reactor. The experimental results show that the local mass transfer parameters have close relationship with the operating conditions, the structure of ALR and the properties of the reaction systems. A series of measurements of pressure pulse indicate that a gas distribution zone exists near the gas sparger, and in this zone the responding signals of pressure pulse are different with the signals measured in other parts of the reactor.

对不同结构的环流反应器的局部流体动力学和传质动力学特性进行了研究，利用压力传感器测量了空气-水、空气-NaCl水溶液、空气-Na〓SO〓水溶液、空气-葡萄糖水溶液和空气-乙醇水溶液五种体系，在不同气速下，不同位置的压力脉动信号，通过随机信号的数学分析，得到压力脉动信号的频谱特性，并依据压力脉动信号的频谱特性的分析给出环流反应器气体分布区的范围。

The result shows that the reaction rate in loop reactor is better than in stirrer reactor.

在冷态模型装置上研究了环路反应器的流体力学特性和化学反应特性，建立了喷嘴喉部两相流的速度与喷嘴结构和操作压力的函数。

A computer-aided local transient flow property measuring system was developed using a high speed CCD camera coupled with optical fibers in order to study the Gas-liquid-solid three-phase jet loop reactors. SnO2 crystal films were orientally deposited on the alkoxysilane molecule-coated hydroxyl glass substrates so as to prepare surface-marked particles as the tracers. An image analysis system was established to identify different phases. Stroboscopic photography was utilized to extend the measure range. The developed measuring and analysis system was capable of determining accurately the local transient flow property in a G-L-S jet loop reactor. Based on the above system, local transient flow properties of gas, liquid, and solid phase were measured and studied the influences of fluid property, operation and configuration parameters on the reactor.

以气液固三相喷射环流反应器为研究对象，将高速CCD和光纤束耦合制成局部瞬态流动特性微机数据采集及图象处理系统，利用MPS硅烷分子在带有羟基的玻璃基底上的自组装引导SnO2晶态膜层在功能化表面上进行沉积，以获得表面标记的示踪粒子，解决图象处理技术与相的识别的问题，利用频闪技术拓展了测量上限，得到可以准确测定气液固三相喷射环流反应器中局部瞬态流动特性的测试系统；采用上述测试技术进行喷射环流反应器中局部气相、液相与固相瞬态流动特性的实验研究，并考察物性参数、操作参数与结构参数的影响规律。

More direct, directer ; most direct, directest

径直的，笔直的

Do you know how to use a chain saw?

你知道如何使用链锯吗？