等径的

In this paper, three kinds of hydroxyl component are prepared for two-component waterborne polyurethane paint, that is, acrylic dispersion, acrylic emulsion and silicone-modified acrylic emulsion. The influence of the composites of these dispersion and emulsions on polymerization process, viscosity, particle size and coagulum are investigated, infrared spectroscopy , inductance coupling plasma , transmission electron microscopy and thermogravimetric analysis are used to characterized their structure, composite, morphology and thermal stability, respectively.

本论文制备了三种用于水性双组分聚氨酯涂料的含羟基组分，即丙烯酸分散体、丙烯酸乳液和有机硅改性丙烯酸乳液，研究了这些分散体和乳液在制备过程中聚合物的羟值、酸值、玻璃化温度、乳化剂、反应温度等对聚合转化率、凝聚物含量、聚合物粘度和粒径的影响，用红外光谱、热重分析、透射电镜和感应偶合等离子技术表征了其结构、组成、形态和热稳定性。

The dissolution of colemanite in aqueous ammonium nitrate solutions was investigated in a batch reactor in terms of stirring speed, particle size, reaction temperature, solid-to-liquid ratio and solution concentration.

对硬硼酸钙在硝酸铵水溶液的溶解在间歇式反应器中就搅拌速度、粒径大小、反应温度、固液比和溶液的浓度等参数的影响进行了研究。

Carbonyl iron fibre with different Fe content (90%~98wt%) and diameter (200nm~l0μm) had been fabricated by adjusting fibre growth factors, such as velocity of Fe5 vapor and protective gas, temperature of chemical decomposition and magnetic field strength. So the diameter of carbonyl iron fibre could be controlled from micron to sub-micron.

对羰基化合物气化速率、保护气氛流量、分解温度和外加磁场强度等因素的调控，制备出铁含量在90%~98%可调、直径在亚微米到微米(200nm~10μm)及长径比可控的羰基铁纤维。

CDMA is a kind of advanced mobile telecommunication technology, which fulfill great capacity and quality、synthetical operation、soft switch and international ramble. It possesses lots of merits such as repellence of interference and attenuation of multiple paths.

CDMA是为满足现代移动通信网在大容量、高质量、综合业务、软切换、国际漫游等方面的要求而设计的一种先进移动通信技术，它具有抗干扰性好，抗多径衰落，保密安全性高等诸多优点。

It works by choosing appropriate gravel, scree, talus decries, coarse sand, medium sand, then ram them to be closely knitted. The sand gravel cushion can increase the bearing capacity of weak groundwork.

这种垫层法是用碎石、卵石、角砾、圆砾、砾砂、粗砂、中砂或石屑等坚硬、较粗粒径的回填材料，经合理级配并夯压密实后形成持力垫层，其主要目的是为了提高浅层软弱地基或不均匀地基的承载力。

General terms of the standard cylinder , piston bore width of about 20% to 25% of the value of comprehensive need to consider the use of conditions, from the piston and cylinder, piston rod and the guide sleeve of the gap size and other factors to decide.

一般对标准气缸而言，活塞宽度约为缸径的20%～25%该值需综合考虑使用条件，由活塞与缸筒、活塞杆与导向套的间隙尺寸等因素来决定。

On qualitatie examination, no dilations, brittleness, obstruction, nodularity, tears, loss of elasticity, color changes, tube fracturing, kinking, loss of resilience, or ariation in external diameter was obsered.

定性检测方面，没有观察到PEG管扩张，变脆，闭塞，结节，裂伤，弹性丧失，颜色改变，管子断裂，丧失回弹性，内径和外径的改变等。

The effects of the concentration of polymer solution, the ratio of monomers, the value of n on the sizes of micelles were studied.

对PAFn及胶束进行了一系列表征，研究了聚合物浓度、单体比、n值的变化等对胶束粒径的影响。

Uses precision measuring devices such as micrometers, verniers, calipers etc, to measure parts and products accuracy to print or specifications.

使用精准测量仪，如千分尺、卡尺、测径器等进行的零件和产品精确度，使其符合图纸和技术规格文件

Compared with the experimental results, it is also found that the gain size of the simulation is greatly similar to that of the experiment after shearing deformation of each pass.

数值仿真结果与试验对比显示，两者结果一致，说明利用数值仿真可以预测等径角挤压块体材料晶粒尺寸的演变过程。

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。