- 《Physica A-statistical Mechanics & Its Applications》 被引量: 72发表: 2002年 Effect of particle shape on the compaction and flow properties of powders. In order to clarify the effect of particle shape on the mechanical properties of powders, such as compaction and flow, the centrifugal ...
A shape that has all sides equal and all angles equal is a ___. A. square B. trapezoid C. rhombus D. rectangle 相关知识点: 试题来源: 解析 A。正方形是所有边相等且所有角相等的图形。梯形边和角都不相等;菱形边相等但角不一定相等;长方形边不一定相等。反馈 收藏 ...
A. a shape with many curves B. a shape like a star C. a shape with few straight lines D. a shape that looks like a cloud 相关知识点: 试题来源: 解析 B。解析:有很多曲线的形状通常没有角;形状像云的也没有明显的角;有很少直线的形状角也比较少;而像星星的形状有很多角。本题考查学生对不...
Another shape is square. A square has four sides. Each side is the same length( 长度 ). A square has four corners called right angles( 直角 ). A triangle is also a shape. The prefix“ tri” on the base word“ angle” means“ three”. A triangle always has three sides and three...
What's it? A. rectangle B. rhombus C. square D. pentagon 相关知识点: 试题来源: 解析 A。一个有四个直角且对边相等的形状是长方形。选项 B 菱形没有直角;选项 C 正方形四条边都相等且有四个直角;选项 D 五边形有五条边。反馈 收藏
A shape with four equal sides and four right angles is called ___. A. Rectangle B. Rhombus C. Square 相关知识点: 试题来源: 解析 C。A 选项“Rectangle”是长方形,对边相等但邻边不一定相等;B 选项“Rhombus”是菱形,四条边相等但不一定是直角;C 选项“Square”是正方形,有四条相等的边和四个...
A golden angle defined on a circle Full size image A golden angle has been defined in two-dimensional Euclidean space as the central angle subtended by a golden arc and has a value of approximately 137.508∘ (Prusinkiewicz and Lindenmayer 1990). To date, a golden angle has been studied...
A. Parallelogram B. Equilateral triangle C. Regular hexagon 相关知识点: 试题来源: 解析 B。A 选项“Parallelogram”是平行四边形,B 选项“Equilateral triangle”是等边三角形,三条边相等,三个角也相等。C 选项“Regular hexagon”是正六边形。反馈 收藏 ...
Which shape has all acute angles? A. Right Triangle B. Obtuse Triangle C. Equilateral Triangle D. Isosceles Triangle 相关知识点: 试题来源: 解析 C。本题考查三角形角的类型。直角三角形有一个直角,钝角三角形有一个钝角,等边三角形的三个角都是锐角,等腰三角形的角不一定都是锐角。
The shape of a liquid surface bounded by an acute or obtuse planar angular sector is considered by using classical analysis methods. For acute angular sectors the two principal curvatures are of the order of the (fixed) mean curvature. But for obtuse sectors, the principal curvatures both ...