查询词典 key brick

The results show that the decalescence of catalyst bed affects the process of hydrogen peroxide catalytic decomposition greatly. If the catalyst bed is preheated or made up of materials with low thermal conductivity, that influence can be depressed. At the same time, the response characteristic of catalyst bed and the efficiency of catalytic decomposition can be improved. The low frequency pressure instability of catalyst bed occurs because of the coupling of catalytic decomposition and supplying. The decomposition plane pushes all the way through the catalyst bed during pressure oscillations, causing unreacted liquid hydrogen peroxide to be exhausted from the bed and leading to the appearance of liquid hydrogen peroxide channeling. Consequently, how to prevent or at least limit this channeling is the key to eliminate the pressure instability of catalyst bed. It was found that adding clapboard to the catalyst bed can depress the pressure instability efficiently.

结果表明催化剂床及催化剂的吸热对过氧化氢分解过程影响很大，对催化剂床进行预热或采用热导率低的材料制造催化剂床等措施，可以降低催化剂床壁面吸热对催化分解过程的影响，提高催化剂床的响应特性和催化分解效率；催化剂床的低频不稳定是催化分解过程与供应系统耦合产生的，催化剂床气体界面的波动过程中，液体过氧化氢穿透催化剂床形成过氧化氢液体通道，过氧化氢液体通道的产生和扩大是催化剂床不稳定的主要原因，也是消除催化剂床不稳定的关键，试验中在催化剂床内加入分流板成功地抑制了催化剂床的低频不稳定。

Herein, we propose an efficient method to prepare the optically active spiro [4,5] decane, a key intermediate for several spirovetivanes.

我们因此提出一种有效的方法来合成具光学活性的旋环状[4，5]癸烷，作为一些旋环状化合物的关键中间产物。

Demands on middle-distillates selectivity have become increasingly severe; and a key problem to improve catalyst technology is how to achieve objectives for maximum middle-distillates selectivity To assess the catalytic performance of hydrocracking catalysts, a new laboratory method using decane as the model compound was develo...

本文首先建立了一种以正癸烷为模型化合物的微反评价方法，其中微反转化率与中型活性呈线性关系；采用回归方程可以拟合出中间馏分油选择性。

Sludge activation phase, acclimatization phase and aerobic granulation phase. In operation control, the settling-time was used as the key factor for the formation of aerobic granules, which could decant the flocculent sludge and regulate the organic loading, and eventually promote the granulation process.

在运行控制过程中通过将沉降时间作为培养好氧颗粒污泥的一个关键控制参数，它既可以去除反应器中沉降性差的污泥还可以在短时间内调节反应器中的运行负荷，从而促进反应器中好氧污泥快速实现颗粒化。

Key equipment for refining raw materials are : Tajikistan, decarbonization reactor, hydrogenation reactor, Tajikistan, and other refined products.

关键设备有：原料精制塔、脱碳反应器、加氢反应器、产品精制塔等。

The decarboxylation of 5-hydroxymethylfurfural to levulinic acid is a key step in the preparation of levulinic acid from biomass.

5-羟甲基糠醛脱羧生成乙酰丙酸是生物质资源出发制备乙酰丙酸过程中的关键步骤之一。

Note : This program interface entire operation consists of four parts : Part I : Part II : Regional expression input Results : The third part of regional output decimal placement of regional median Part IV : Key for the menu from top to bottom in the direction of expression and the nearest switching between spaces.

注意：此程序界面整个行动包括四个部分：第一部分：第二部分：区域表达输入结果：第三部分区域输出小数位数设置区域第四部分：关键菜单从上到下的方向表达与最接近的空间之间切换。

801E50 .( Imp: Don't key in all the three numbers and convert to hexadecimal, this would give a different combination) The decimal part for a color varies from 0-255 and we can have different combinations by varying this RGB combination.

进出口：不要在所有关键的三个电话号码，并转换为十六进制，这将给不同的组合）的小数部分的颜色不同， 0-255 ，我们可以有不同的组合不同这三原色的组合。

The key features of the International System are decimalization, a system of prefixes, and a standard defined in terms of an invariable physical measure.

国际制度的主要特点是采用了十进制法、字首体系、以不变的物理度量方式解释的标准。

The key issue of decimation is how to realize the digital filter before decimation, especially for design and implementation of multistage decimation filter.

实现抽取的关键问题是如何实现抽取前的数字滤波，特别是多级抽取时滤波器的设计与实现。

Salt is good, but if the salt becomes flat and tasteless, with what do you season it?

14：33 盐本是好的，盐若失了味，可用什么叫它再咸呢？

He reiterated that the PLA is an army of the people under the leadership of the Communist Party of China.

他重申，人民解放军是在中国共产党领导下的人民军队。