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The advantages of Fluorphlogopite Mica are: good penetrativity of light and wave; long time operation at the temperature up to 1100°C; anticorruption of strong acid and alkali and nocuous gases; almost no loss in high frequency medium; 2000-time-smaller vacuum deflation at high temperature than inartificial mica while 1000-time-higher body resistance than inartificial mica.

氟晶云母优于其他云母的关键点在于:优秀的光、波透过率;可长期在高达1100℃的高温环境下工作;抗强酸、强碱及有害气体的腐蚀;在高频介质环境下基本没有损耗;高温真空放气量比天然云母小2000倍,体电阻率比天然云母高1000倍。氟晶云母是替代天然云母、聚四氟乙烯、石英玻璃等低性能材料的新型耐高温、高频、绝缘材料。

The dilute hydrochloric acid concentration, Ti/clay ratio, H/Ti ratio, the pillaring reaction temperature, the aging time of pillaring agent and the initial concentration of clay greatly affect the formation of Ti-PILC.

结果表明,盐酸的浓度、Ti/土比、H/Ti比、交联温度、交联剂老化时间和粘土悬浮液浓度等制备条件对钛交联蒙脱石的物化性能有较大的影响。

Ti-PILCs were also obtained with pillaring agent prepared from Ti(n-C4H9O)4 and HC1 by Sol-Gel, using purified Na-montmorillonite in Hubei as the starting clay.

以鄂东钙基膨润土经提纯钠化后所得的精制钠基蒙脱石d_(001=1.28nm为基质粘土,以钛酸正丁酯[Ti(n-C_4H_9O)_4]为钛源,采用溶胶—凝胶法制备了一系列钛交联蒙脱石纳米复合材料;并对Ti/土比、H/Ti摩尔比和盐酸浓度等主要合成条件进行了讨论。

This paper has introduced the production technology of Nylon-6 micro-denier POY, DTh.

介绍了生产锦纶细旦 POY、DTY的工艺技术,探讨了POY加工影响因素和后加工速度、拉伸比、D/Y比、变形温度等参数对锦纶细旦丝质量的影响。

The results show that ordered phases precipitated and formed a pseudobinary system; precipitated earlier than g phase by a congruent ordering + spinodal decomposition mechanism and thus produced a nonstoicheometric ordered phase, then the nonstoicheometric g phase precipitated by a non--classical nucleation and growth mechanism at the boundaries of phases, meanwhile, both of them transformed to stoicheometric ordered phases.

研究发现该合金沉淀过程中,析出D022结构的(Ni3V)相和L12结构的Ni3Al相,二者构成伪二元系;相先于相析出,相的沉淀机制为等成分有序化+失稳分解,相在相的相界处非经典形核,二者均先形成非化学计量比有序相,之后向化学计量比有序相转变;随Al浓度增加,相析出变慢,所占比例减少,而相反之,析出越来越早且所占比例增加。

A new quadrifilar helix antenna is given. The antenna has four feed ports and the phase difference between two border upon ports is 90 degree. The simulation results indicate that this antenna has a good performance of axial ratio and gain pattern.

为了改善天线的轴比性能,文章提出了一种4臂等幅馈电、相位依次相差90度的天线方案,仿真结果表明,这种天线的增益特性和轴比特性都得到了较大的改善。

In this paper, two assemblies of special test equipments have been designed and fabricated by authors in our laboratory: namely Catalyst Molding Process Analyzer and Catalyst Mechanical Process Tester. These new skills are developed for the dynamic studies on whole mold forming process and crushing process of Fe-Cr WGHS catalyst pellet. Based on the orthogonal experimental design, the effects of some factors during the forming process of solid catalyst, such as predensification proportion, calcination time, calcination temperature and content of graphite on the mechanical strength of catalyst pellets are systematically examined, and the molding conditions have been optimized. Based on the experimental data, the relationship between catalyst density and forming pressure are educed, and the physical significances of some related parameters are described. The parameter of macro scopic elastic moduls has been suggested to character the mechanical properties of molding catalyst. The effects of molding pressure on mechanical properties of catalyst pellets are discussed, and results show that there exists a optimal molding pressure for the ideal mechanical properties: when over-high or over-low pressure is applied, the specific surface area and side crushing strength of catalyst pellets will decreased. The "rebound effect" will be undermined by the unsuitable pressure maintain process, resulting in the apparent decrease of mechanical strength of catalyst pellets.

本研究通过自行设计制造的催化剂模压成型过程分析仪(Catalyst Molding Process Analyzer, CMPA)和催化剂力学性质测试仪(Catalyst Mechanical Properties Tester, CMPT),以Fe-Cr系高温变换催化剂片剂为研究对象,对成型过程和受压破碎过程提供了全过程动态研究的新手段;本研究利用正交实验设计方法考察了固体催化剂成型过程中诸因素(包含预密致比例、煅烧时间、煅烧温度和石墨含量等)对催化剂成型体强度的影响,并对成型条件进行了优化;根据实验结果,关联确定了固体催化剂成型过程中的密度-压力关系式,并对方程中诸因子的物理意义进行了描述;提出了一种利用宏观弹性模量来表征成型催化剂的力学性质的方法;研究讨论了成型压力对催化剂成型体强度性质的影响,结果表明:对于催化剂成型体的强度和比表面性质,成型压力存在着一个最佳值,过高的成型压力会导致比表面积和侧压强度的降低;不适当的成型压力的维持时间会破坏&压力回弹&作用,造成催化剂成型体的机械强度明显降低。

September 29, Obi Island the first leg of the classroom came to Guangzhou Tianfu Road Primary School, elected by the class more than 40 student representatives to participate in this church is rich in content and has a lively and practical significance for the daily art classes, Over the 2-hour course, students learned the use of these images in magazines, how to make better use of color, color in life, such as the use of practical knowledge, the classroom, the students showed great interest in and listened carefully as Obi-island senior lecturer in graphic art design Xie Sisi explain.

9月29日,奥比岛大课堂第一站来到了广州市天府路小学,由各班级选举出来的40多名学生代表,参与了此堂内容丰富生动且具有日常实用意义的美术课,在长达2小时的课程中,学生们学到了图像在杂志当中的运用、如何更好地运用颜色、色彩在生活中的运用等实用性知识,课堂中,学生们表现出极大的兴趣,并认真听取了担任奥比岛高级美术设计谢思思讲师的生动讲解。

Because European specifical culture background and Shakespeare his own life, it affect his play, which it is full of strong religious thought.

由于欧洲特定的历史文化背景以及莎士比亚个人生活环境等因素的影响,莎士比亚的戏剧创作包含了浓郁的基督教思想内蕴,本文就此作一探讨。

By cultivating Stizolobium hassjoo cells which produce L-DOPA, the effects of these parameters were appraised by KLa, Dissolved Oxygen mixing intensity, off-gas composition, SOUR and SCER (specific carbon dioxide evolution rate) which were thought to be the important parameters for bioreactor cultivating plant cells.

培养过程测量溶氧,出口气体组成,比氧气消耗速率,比二氧化碳生产速率及反应器之KLa,混合强度等以评估各操作条件下培养之成效。

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歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车,和一双合并为一移交&整个lotta爱&。

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