线弧

The theories of third order contact analysis have been successfully applied in theoretical research and practice in the manufacture of circular-arc bevel gears with good effect.

三阶接触分析理论在弧齿锥齿轮的理论研究和加工实践中都取得了很好的效果，而这种理论与锥齿轮的齿制是无关的，本文的研究工作就是围绕如何将三阶接触分析理论应用到延伸外摆线锥齿轮的加工中这一核心问题展开的。

Especially, an explicit representation of quintic PB curves is established and the sufficient and necessary algebraic characterization of quintic PB curves is presented.

对于n次PB曲线，得到了以(2n-1)次有理曲线精确表示的等距线和多项式形式的弧长表达式。

Culm sheaths purple-red or pale purple-red, with purple-brown margins, densely purple-brown spotted, thinly white powdery, glabrous; auricles and oral setae absent; ligule purple-brown, arcuate, broad, with long, purple-red cilia, blade reflexed, green with red-yellow margins, linear, flat or weakly crinkled.

竿箨紫红色或者浅紫色红，带有紫褐色边，浓密紫褐色认出，稀疏白色粉状，无毛；叶耳和口头的刚毛无；叶舌紫褐色，弧曲，宽，有长时间，紫红色cilia，由于红黄空白边反折，绿色，线，平或者身体虚弱的叶片出现皱纹。

Leaves 2 or 3 per ultimate branch; auricles and oral setae commonly absent; ligule strongly exserted, arcuate, ciliolate; blade lanceolate to linear-lanceolate, 7–16 × 1–2 cm.

每末级的分枝留下2或3；通常的叶耳和口头的刚毛无；叶舌强烈外露，弧曲，具短缘毛；叶片披针形的到线状披针形， 7-16 * 1-2 厘米新嫩枝4月2n = 48×。

The mathematic model for optimization of the design parameters of cycloidal pump with singularity type of profile was proposed.

提出了异形齿廓摆线泵的优化设计数学模型，以单位体积排量最大为目标函数，以泵的连续传动条件、密封条件、强度条件为约束函数，创成系数和弧径系数为设计变量。

2 As long as internodes, conspicuously longitudinally ribbed only toward their apex, cartilaginous, gray or yellow-gray setose, margins densely yellow-brown setulose; auricles falcate, unequal; oral setae yellow-brown, 2–7 mm; ligule arcuate, short; blade erect, linear-lanceolate, glabrous.

分枝5-15，外折。逐渐的竿箨脱落，叶耳镰刀形，不等长；口头的刚毛黄褐色，2-7毫米；叶舌弧曲，短；叶片直立，线状披针形，无毛。

In addition, we have series of related products: NZP3 series of stator argon arc welders, HXK series of digital-controlled commutator undercutter, intermediate frequency welders for electronic devices, welders for automobile generator blades, testing platforms for automobile generators , testing platforms for motor overall performance, production lines of automatically winding threads for generators stators, production lines of starter rotors, and etc..

此外还有机关产品：NZP3系列定子叠片氩弧焊机、HXK系列数控整流子下刻机、电子器件中频焊机、汽车发电机风叶焊机、汽车发电机测试台、电机综合性能试验台、发电机定子绕组自动嵌线成套生产线、起动机转子生产线等。产品遍布全国。

In addition, we have series of related products: NZP3 series of stator argon arc welders, HXK series of digital-controlled commutator undercutter, intermediate frequency welders for electronic devices, welders for automobile generator blades, testing platforms for automobile generators , testing platforms for motor overall performance, production lines of automatically winding threads for generators stators, production lines of starter rotors, and etc..

此外还有机关产品：NZP3系列定子叠片氩弧焊机、HXK系列数控整流子下刻机、电子器件中频焊机、汽车发电机风叶焊机、汽车发电机测试台、电机综合性能试验台、发电机定子绕线生产线、起动机转子生产线等。

The R9 TP irons share the more classic look, but with even more tour-preferred shaping: a more compact head, semi-straight leading edge and semi-square toe, thinner topline, and a thinner sole that is cambered and beveled.

大埔的九号铁杆分享更多的经典外观，但更旅游首选的形成：一种更紧凑的头，半直领先优势和半平方米的脚趾，更薄的背线，以及稀释剂是唯一的弧面和斜面。

Took Sanchaji suspension bridge in Changsha as a case study, based on different hypothesis, two methods were deduced, the parabola method of cable gravity distributing uniformly along the span, and the catenaries method of gravity distributing equally along the curve.

以长沙市三汊矶湘江大桥为工程背景，对自锚式悬索桥的主缆线形及无应力长度的计算方法进行了研究，推导出两种基于不同假定下的主缆线形及无应力索长的计算方法：假定主缆自重沿跨径均布的抛物线法和假定主缆自重沿弧长均布的分段悬链线法。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。