线轴

A systemic research on the birefringence of side-hole fiber is presented. The research results show that the birefringence of circular-core side-hole fiber relies mainly on stress birefringence, its fast axis is parallel to the link line of the two holes, and its intrinsic birefringence increases exponentially with the angle and ellipticity of side holes.

本论文的主要研究结果和创新在于： 1、对边孔光纤的双折射特性进行了系统研究，提出圆芯型边孔光纤以应力双折射为主，两边孔连线方向为其快轴方向，其双折射大小与边孔张角和边孔椭圆度成指数关系。

An analysis is made about Descartes rays of transparent round-section fibers——a special internal surface reflection rays of the fiber when parallel rays strike the fibers perpendicularly to fiber axis.

分析了透明圆形截面纤维在垂直纤维轴光线照射时纱维内表面反射光的一种特殊现象———笛卡尔线现象。

An analysis is made about Descartes ray s of transparent round-section fibers——a special internal surface reflection rays of the fiber when parallel rays strike the fibers perpendicularly to fiber axis.

分析了透明圆形截面纤维在垂直纤维轴光线照射时纱维内表面反射光的一种特殊现象———笛卡尔线现象。

Company nature: domestic production and trade enterprises operating range: Cabling Products (Crystal first, network lines, light stick, coaxial cable, patch panel, sub box, security card, information boxes, cabinets, network modules, information panels, switches, light stick in the total allocation), etc. Product Factory Area: 40,000 square meters Number of employees: 300 people, the history of the development: Shanghai Pu Co., Ltd. Founded in 1998, located in Shanghai Pudong Sunshine Boulevard, covers an area of 40000 square meters, more than 4,000 square meters of standard factory buildings.

公司性质：内资生产型及贸易企业经营范围：布线产品（水晶头，网络线，光扦，同轴线缆，配线架，分线盒，保安牌，信息箱，机柜，网络模块，信息面板，交换机，光扦总配）等产品厂房面积：40000平方米员工人数： 300人发展历史：上海万普有限公司创立于1998年，座落于上海浦东阳光大道旁，占地面积40000平方米，标准厂房4000余平方米。

The working load of engin e in plowing can be taken for stable and normal random load whose power spectrum peak value is below 2 Hz. The working load of engine in rototilling contains bo th periodic element whose fundamental frequency is rotating speed of the blade s haft and normal random load of which the parts of energy centers in fundamental frequency and others are distributed over wider frequency band.

证实了犁耕作业发动机的载荷可以认为是平稳的正态分布的随机载荷，其功率谱曲线的谱峰在低于2 Hz处；旋耕作业发动机的载荷是兼有随机成分和周期成分的动态载荷，其中周期谐波的基频为刀轴转速，随机成分一部分能量集中于基频以内，部分分布于较宽频率范围。

In the second position, there is no contact between the spool shaft and the pinion gear.

在该第二位置上时，绕线筒轴与小齿轮不发生接触。

Inflorescence a large terminal panicle with elongate central axis; primary branches simple or branched, bearing short dense racemes of paired spikelets; racemes fragile; rachis internodes and pedicels slender, ciliate.

花序一大的顶生圆锥花序具拉长主轴线；主枝单一或分枝，承担配对的小穗的短紧密总状花序；总状花序脆的；节间的轴和花梗纤细，纤毛。

On the basis of the achieved result and the effect of stress such as minor principal stress, intermediate principal stress, hydrostatic pressure, stress Lode degree, a generalized hyperbolic failure function adapted naturally with the envelope form of Mohr-Coulomb criterion is proposed for brittle rocks; and a smooth failure function acquired by Yu Maohong is also presented. Thus, a generalized polyaxial strain energy strength criterion is created.

在分析脆性岩石强度的静水压力、中间主应力、最小主应力以及应力Lode角等4种效应的基础上，提出子午面上与Mohr-Coulomb准则包络线自然衔接的广义双曲线型破坏函数及八面体偏平面上光滑角隅型破坏函数，从而建立非线性广义多轴应变能强度准则。

To overcome the inconvenience of traditional centrifugal pump impeller design, the quartic Bezier curve is used to design the meridional plane and blade profile.

针对传统离心泵叶轮设计步骤繁琐的不足，提出了采用4次Bezier曲线来设计叶轮的轴面流线及叶片型线的方法。

It is so named from the fact that the projections of three equal lines, parallel respectively to three rectangular axes, are equal to one another.

之所以这麼称呼它是因为它是三条等长的线，两两平行於三个长方形的轴。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。