直径一样的

Tooth Proportions.—There are 17 pitches: 2.5/5, 3/6, 4/8, 5/10, 6/12, 8/16, 10/20, 12/24, 16/32, 20/40, 24/48, 32/64, 40/80, 48/96, 64/128, 80/160, and 128/256. The numerator in this fractional designation is known as the diametral pitch and controls the pitch diameter; the denominator, which is always double the numerator, is known as the stub pitch and controls the tooth depth. For convenience in calculation, only the numerator is used in the formulas given and is designated as P. Diametral pitch, as in gears, means the number of teeth per inch of pitch diameter.

齿比——一共有17种齿比：2.5/5，3/6，4/8，5/10，6/12，8/16，10/20，12/24，16/32，20/40，24/48，32/64，40/80，48/96，64/128，80/160和128/256在这一系列的分数中的分子是径节，径节的大小决定了节圆的直径；而分数中的分母通常是分子的两倍，分母是残余径节，它的作用是控制齿槽的深度为了方便计算，在所有的公式中都使用分子作为计算参数，并且与齿轮的表示方式一样定义为径节P尺寸，也就是在节圆上，每英寸长度上的齿数

This bronze hand is called the Number One palm of all times, it is as the same size and shape as the right hand of Lingshan Grand Buddha, the palm has a height of 11.7 meters and a breadth of 5.5 meters, its fingers are 1 meter in diameter, the total weight is 13 tons.

这只铜铸的手掌被称为天下第一掌，它和灵山大佛的右手掌完全一样，它高11.7米，宽5.5米，每根手指的直径就有1米，总重量为13吨。

Wings of nutlet ca. as wide as nutlet; female inflorescence less than 1 cm in diam.; peduncle 8-15 mm; branchlets densely resinous glandular.

约的小坚果的翅和小坚果一样宽；雌花序直径不到1厘米；花序梗8-15毫米；浓密的小枝树胶腺。

Culms 5–12 m, 2–5 cm in diam.; internodes 15–30 cm, usually strongly shortened and commonly ventricose at basal nodes, distally inflated for several mm below node at mid-culm and basal nodes, initially white powdery, glabrous; wall 4–8 mm thick; nodal ridge as prominent as sheath scar or slightly more prominent; sheath scar initially fringed with white pubescence.

秆5-12米，2-5厘米直径；节间的15-30厘米，壁4-8毫米厚；节的脊象鞘痕或一样突出的稍更突出；鞘痕最初具流苏的具白色的短柔毛。

Culms ca. 8 m, ca. 2.5 cm in diam.; internodes dull purple-green, becoming green with lower internodes tinged purple, to 35 cm, initially white powdery; wall ca. 5 mm thick; nodal ridge slightly elevated, as prominent as sheath scar; intranode ca. 5 mm. Culm sheaths pale red-brown, sometimes tinged green, sparsely to densely speckled, dark brown and glabrous along margins, sparsely strigose; auricles and oral setae well developed, purple; ligule purple, truncate to arcuate, short but broad, margin fringed with purple-tinged cilia; blade reflexed, purple to green, crinkled.

秆约8米，约厘米直径；节间愚笨紫色绿色，变得绿色与低节间紫色地微染着，令35厘米的是，最初白色粉状；壁约5毫米厚；节的稍隆起脊，象鞘痕一样突出； intranode约5毫米竿箨浅红棕色，有时微染绿色，疏生对浓密有斑点，暗褐色和沿边缘，疏生糙伏毛；叶耳和口头的刚毛发育良好，紫色；叶舌紫色，削去到弧曲，短但是辽阔，用紫色微染的cilia作为边缘的边；叶片反折，对绿色，皱曲紫色。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐