等径的

A series of double metal cyanide complex catalysts were prepared in two different methods by using β-cyclodextrin, PEG-1000 or Tween-60 as an additional complex ligand respectively, and the effects of different kinds of additives and preparation methods on the appearance, particle diameters, crystal constitution and activity of DMC catalysts were also studied.

分别以PEG-1000、β-环糊精和吐温-60等为助络合剂，采用不同工艺方法制备了具有不同结构的双金属氰化物络合物催化剂，研究了不同助络合剂和不同制备方法对DMC催化剂的形貌、粒径、晶型结构和催化活性的影响。

Because of the high-non-linearity, the adiabatic lateral wall condition and high aspect ratio , the numerical simulation process possesses a series of features. A number of computations and numerical tests have been conducted to find effective convergence conditions.

由于所计算问题的高度非线性，以及侧壁绝热、大的长径比等特点，使数值模拟的迭代收敛过程出现一系列特点。

Factors working on the reaction mechanism include temperature, pH, Eh numerical value, retention time of contaminants in the reactor, proportion of iron and carbon and the diameter of granulose iron.

影响反应工艺的因素主要有：反应体系的反应温度、pH值、Eh值、污染物在反应器内的驻留时间、铁炭比和铁屑粒径等。

The axes of length to diameter ratio bigger than 20 is called the thin major axis .

长径比大于20的轴称为细长轴，由于刚性很差，在加工中产生的切削力、切削热、振动等因素将直接影响工件加工的尺寸精度和形位精度，加工难度大。

The most important influencing factors of sphincter preserving operation in lower rectal cancer is the distance of tumor lower margin from anal edge or the pectinate line.

肿瘤下缘距齿状线或肛缘的距离是低位直肠癌手术保肛最主要的影响因素，肿瘤周径、肿瘤病理分期、肿瘤主体位置、肿瘤大体分型、肿瘤分化程度及患者的性别及BMI等均可对低位直肠癌手术保肛产生影响。

At the same time, a pitot tube is used to measure the dynamic pressure of smoke, with the mixed velocity of water mist a...

通过改变喷头类型和工作压力，研究了不同工况下雾滴速度和粒径等因素对烟气运动速度的影响规律，定量地表征了细水雾作用下烟气在水平方向和垂直方向上速度增量的变化规律，为细水雾灭火系统的优化设计提供了科学依据。

This dissertation, from a system design point of view, is devoted to the essential problems of RRM in CDMA systems based on SIC, such as power control, rate allocation, call admission control and system capacity analysis under multi-path diversity fading channels.

本文从系统设计出发，研究基于SIC的CDMA系统中的无线资源管理关键问题，包括功率控制、速率分配、呼叫接纳控制以及多径衰落分集信道下的容量分析等几个方面。

For different solute-solvent-supercritical CO_2 systems, there are some generalities of the effects of the process parameters, for example, PS decreases with the increase of saturator pressure. But the effects of the process parameters are not same relating to the characteristics of the solutes and solvents.

不同的溶质-溶剂-超临界CO_2系统，其操作参数的影响规律有相同之处，如随着混合器压力升高微粒粒径减小等，但又不尽相同，这跟溶质和溶剂的性质有关。

The influence of the silane chain-segment on the reaction state, particle size and viscosity of product was discussed.

采用自乳化法合成了一种含有硅烷链段的水性聚氨酯整理剂，探讨了硅烷链段对水性聚氨酯剂的反应状态、产物粒径、粘度等的影响。

The effects of the amount of catalyst,water and ethanol on the properties of silica sol were investigated.

研究了催化剂、水以及乙醇的加入量对溶胶性质的影响，用粘度、凝胶时间、粒径等对溶胶的性能进行了表征。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。