查询词典 process control

And the electroreduction process of nitrobenzene on WC powder electrode in basic solution is investigated by cyclic voltammetry, linear potential sweep and chronoamperometry. In the process of electroreduction of nitrobenzene on WC powder electrode, liquid phase mass transferring may be the control step.

并且也用循环伏安、线性扫描和恒电位阶跃等测试方法研究了碳化钨粉末电极在碱性介质中析氢和还原硝基苯的电化学特性，发现碳化钨在电催化还原硝基苯过程中，可能主要受反应物的液相传质控制。

The historical process of transition between cultivation and pasture animal husbandry and its ecological impact has been analyzed by demonstration to explore the large-scale laws.(2). The driving process has been analyzed and behavior mechanism of local people was also construed.(3) The new interpretation of desertification causes has been made to search root of estrepement, overgrazing and excessive firewood gathering.(4) The comparison and selection have been made to explore new changing direction of integrated land desertification control strategy.

主要进行了：①农、牧业变化的历史轨迹与生态环境演变的实证研究，从大的历史尺度寻求农、牧业变化与沙漠化之间的互动关系；②农、牧业选择变化的驱动过程研究，从较短的时间尺度进行高分辨率的过程跟踪与解析，重点分析农牧民的行为机制；③农、牧业选择变化对沙漠化过程的动因解析研究，重点解析&滥垦、滥牧、滥樵&产生的深层次根源，为沙漠化防治战略的制定提供理论依据；④生态建设策略的比较与转型方向的研究。

Usually we linearize them approximately in industrial process,but in some cases this can't satisfy the request of automatic control which makes us consider the nonlinear factors in the industrial process.

在生产中通常对非线性作近似线性化处理；但在某些情况下线性近似达不到自动控制的要求，必须对生产过程中的非线性情况进行考虑。

At the late stages of the ore_forming process, the main ore_forming fluid was NaCl_H2O. According to characteristics of the fluid inclusions, high 3He/4He ratios and the existence of lots of mafic microgranular inclusions, the authors consider that the ore_forming materials of the Longshang tin_polymetallic deposit were derived from multiple sources. The ore_forming fluids were mixed with mantle, crust and atmospheric water. Under the control of igneous and surrounding rocks, the mantle ore_forming fluids played a key role in mineralization at the early stage of the ore_forming process.

根据流体包裹体特征，结合高3He/4He比值以及在锡田花岗岩中存在大量镁铁质微粒包体，笔者认为：锡田垄上锡多金属矿床成矿物质是多来源的，成矿流体为地幔、地壳和大气水的混合产物；锡多金属来源受岩浆和围岩控制，而在成矿作用过程中尤其是成矿早阶段，地幔成矿流体可能起到了积极的甚至关键的作用。

Machining process is a complicated, multivariant and dynamic system and an effective control of the process is one of the most essential requirements for the manufacturing system automation.

加工过程是一个复杂多变的动态的系统，对其进行有效控制是制造系统自动化要解决的基本问题之一。

In the loop control, the process mathematical model is built by physicochemical research in production process.

根据对生产工艺的分析，完成了对生产线的逻辑控制系统。

In the loop control, the process mathematical model is built by physicochemical research in production process.

根据对生产工艺的分析，完成了对生产线的逻辑控制设计。

In the loop control, the process mathematical model is built by physicochemical research in production process.

在回路控制设计中，分析了水泥生产过程的特点以及其物理化学的反应，近似建立了控制回路的数学模型，设计了具有Smith预估补偿器的PID调节器。

The updated development of production technology of clean steel in Shougang is introduced, including the end-point control of converter, LF-VD refining process and continuous casting process to prevent slag carryover and air reoxidation.

以转炉终点控制、LF -VD精炼及连铸过程防止卷渣和二次氧化为主线，简述了首钢近年来在洁净钢冶炼技术方面所取得的一些进展。

The has been studied. Radix isatidis, a Chinese medicinal preparation used commonly , effectively in clinical and unclarified in active substance, was chosen as a model to be studied. Based on the concept of production quality control, considering the features of TCM itself, the process of TCM preparation, especially the heating process has been studied. The physico-chemical properties assay, chemical analysis and bioassay, also the bio-thermal activity had been applied in this study.

根据药物生产质量控制理念，结合中药的特点，本文选取临床常用、疗效确切但药效物质基础不清的板蓝根为研究载体，以中药制剂过程单元操作特别是加热过程质量控制为主要着力点和切入点，在常规理化检测和化学组分分析的基础上，引入生物活性检测，探索建立基于理化—生物关联检测的中药生产过程质量控制模式和方法，以期为中药生产中原料药、半成品和成品实现全程质量控制提供技术支持。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。