查询词典 surface area

The effect of processing parameter on the morphology, phase, specific surface area and pore volume of theγ-AlOOH, and the effect of pH value and temperature on the velocity of dissolution–reprecipitation were studied.

在熟化过程中，反应溶液的pH值和反应温度的升高均加快熟化过程溶解-再结晶速度，使熟化过程进行得更充分。

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。

When boats have the same weight, the circular shape like the above figure has smaller surface area than the squarish shape like and.

当船具有同样的重量，圆形像上述数字已较小的表面积比拘谨的形状像和

Instead of subdividing the surface area with traditional walls, new walls were designed with a certain thickness, texture and color.

而不是传统的细分与墙的面积，新墙在设计时一定厚度，质地和颜色。

A novel carbon-sulfur nano-composite as cathode for lithium battery was synthesized by heating sublimed sulfur and high surface area activated carbon in certain conditions.

用该复合材料作为正极活性物质所制备的锂蓄电池具有较好的循环性能和高的比容量、比能量。

As to the initial reaction rate,the influence of sulphation temperature is stronger than that of specific surface area of MgO.

提高MgO硫酸盐化的反应温度能够增加MgO变成MgSO4的转化率。就最初反应速率而言，硫酸盐化反应温度的影响大于比表面积的影响。

It is found that the higher the calcination temperature of MgCO3,the smaller the specific surface area of MgO is,so is the initial reaction rate of sulphation of MgO.

实验表明，菱镁矿(主要成分MgCO3)的煅烧温度越高，其煅烧产物MgO的比表面积越小，因而MgO硫酸盐化的初始反应速率越低。

Methods The resection of a talocalcaneal coalition or triple arthrodesis was selected according to calcaneal eversion angle and the rate of a talocalcaneal coalition and the posterior surface area of the talocalcaneal joint.16 feet in 12 patients including 8 males and 4 females were operated upon and reviewed at a mean time of 18 months.

根据术前跟距轴位CT扫描所测量的跟距联合与跟距后关节二者横向切面之比率及跟骨外翻角度来决定采取跟距骨桥局部切除或三关节融合术。

Effects of Ocular surface area and blink rate on teer dynamics.

干眼病记分分级和人工泪疗效评价的研究。

The density of dendritic spines—tiny, thornlike projections that provide more surface area for the reception of nerve signals—increased in this region as the female's levels of estrogen rose.

由美国洛克斐勒大学的伍列及麦克尤恩所完成的一些精采研究，显示雌鼠在动情周期中，海马的 CA1区会出现消长变化：当雌鼠体内雌性素含量上升时，该区神经元树突棘的密度也随之增加；树突棘是树突上头的微小针状突起，可增加接收神经讯息的表面积。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。