查询词典 shapes

In the second part, we developed a new approach for the preparation of highly dispersed carbon black platinum nanoparticle with different geometric shapes by introducing clay (0 to 33%) as a dispersing agent in 5% Nafion co-solvent suspension without any organic solvents. FE-SEM analysis of CB/clay (100/0, 85/15, 67/33) was achieved CB particles with an average diameter of 40-60 nm. The hydrophilic property of the hybrid material was effectively improved in the presence of the clay was observed in sessile-drop test.

第二部分中我们发现在燃料电池之触媒制备常利用碳黑作为载体，碳黑在水中分散程度不一，而有机分散剂之电阻质较高常导致触媒用量提高增加成本，在本论文中我们利用几何片状结构的黏粒矿物与Nafion溶液做为分散剂巧妙的将碳黑分散，在不同黏土矿物与碳黑之不同比例(clay/CB 0/100， 15/85， 33/67)下进行分散，在SEM及TEM鉴定下证明其分散程度而碳黑粒径约40-60 nm。

Illite fundamental particles showed platy to lath shapes. Platy particles exhibited various spiral growth patterns, i.e. circular, malformed circular, polygonal single unit-cell layer spirals, polygonal parallel step spiral, interlaced spiral patterns, etc.

伊利石单元粒子生长过程中，伊利石单元粒子呈现从板状体到条状体的生长，而板状颗粒又呈现各种螺旋生长图案，有圆形、残缺的圆形、多边螺旋、平行阶梯状螺旋、交错螺旋等。

The Poincare Conjecture was first posed by the French mathematician, Jules Henri Poincare, in 1904, and seeks to understand the shape of the universe by linking shapes, spaces and surfaces.

庞加莱猜想最先由法国数学家亨利·庞加莱于1904年提出，是一个关于三维空间形状的问题。

Cut out three V shapes at the pointed end of the cone using a sharp scissors.

在尖端用剪刀剪开3等份。

Most buildings are based on boxy / pointy shapes and are quite sharp and tall.

大部分建筑都基于正方行和非常高耸尖锐的形状。

The shapes and forms of tetrahedral tetrads grains may be described with a new method of polar coordinate that is more exact and more direct than with traditional measurement method of polar axis and equatorial axis.

用极坐标法描述四合体花粉的新方法可以表现其饱满度，比较传统上用极轴、赤道轴的长短表现花粉平面大小的方法，更加准确而直观。

Simple finite difference method is proposed for calculating polarizability of conductors and dielectrics in various shapes in radial and cylindrical coordinates.

bstract：使用简单的有限差分法来计算在圆与圆柱座标系中导体和介电质在不同的形状的可极化性。

One of Mr Ball's heroes is Sir D'Arcy Wentworth Thompson, a Scottish biologist and polymath, who in 1917 wrote "On Growth and Form". This mammoth and erudite tome, the first formal attempt to analyse patterns and shapes in nature, was described by a colleague, Sir Peter Medawar, as "the finest work of literature in all the annals of science that have been recorded in the English tongue."

鲍尔心目中的英雄之一是苏格兰的生物学家和博物学家达西·温特沃斯·汤普森，他在1917年写了一本包罗万象的大部头——《关于生长和形状》，这是有史以来第一次正式地尝试分析自然界中的图案和形状，这本书被他的同行彼得·梅达沃称作"用英语写作的所有科学年鉴中最好的一部"。

The bodies of people who had died in Pompeii left impressions in the ash that showed their exact shapes .

这些在庞贝城中遇难的人的身体在火山灰中留下了遇难时的确切痕迹。

Recent years, however, have produced a revolution in this field, as a result of new techniques, wider ranges of materials and a far more variety in the shapes and sizes of prefabricate d units.

然而近年来，由于新技术的出现，材料的选择范围更加广泛，以及预制构件的形状、型号多种多样，致使这一领域发生了一场革命。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。