螺旋

In the paper, the math model of the fitting machining benchmark curve of stone slice has been given, which used on the handrail of eddied ladder ,and circular helix has been used to be a fitting curve.

本文给出了旋转扶梯石材贴片的加工基准曲线拟合的数学模型，以空间螺旋线作为拟合曲线，为石材数控线切割机提供了理论基础，解决了石材加工行业中的实际问题。

I used circular polarization helix antenna and linear polarization horn antenna do a lot of experiments for many situation, for example, different polarization mode、different distance between antennas and metallic body among antennas, and I acquire some valuable data.

使用圆极化方式的螺旋天线和线极化方式的喇叭天线分别对不同极化方式、不同天线间距和天线之间存在金属障碍物等各种情况进行了大量的实验，并获得了有价值的数据。

In the paper, the math model of the fitting machining benchmark curve of stone slice has been given, which used on the handrail of eddied ladder , and circular helix has been used to bi a fitting curve, the general control machining linear slicer of stone, and has resolved the practical question on the machining of stone.

本文给出了旋转扶梯扶手石材贴片的加工基准曲线拟合的数学模型，以空间螺旋线作为拟合线，并给出用c语言编写的通用处理程序，为石材数控线切割机提供了理论基础，解决了石材加工行业中的实际问题。

By analytic geometry method and solving quadratic equation,a computer simulation algorithm of digital projection under arbitrary scanning locus was proposed.The algorithm is based on the rules of attenuation of monochromatic X-rays.Through mathematical modeling and computer simulation,digital projections of ellipsoid and cylinder in circular and helix scanning modes are exemplified respectively,which are proved to be correct by FDK and PI-line reconstruction algorithms.

介绍了一种利用解析几何和求解二次方程仿真任意扫描轨迹下的锥束射线投影数据算法，该方法基于单色射线贯穿物体的衰减理论，通过数学建模与计算机仿真，给出了椭球、圆柱两种典型模型分别在单圆、螺旋线扫描轨迹下的投影数据仿真结果，并利用FDK和PI线重建算法进行验证，证明了该种数值仿真方法的正确性。

Because data is stored in a spiral fashion, users should avoid wiping the disc in a circular motion.

因为数据是以螺旋方式储存的，用户应避免以环行的运动方式来擦拭光盘。

The study of the flow of power-law fluid in a helical pipe with circular section with perturbation method.

采用摄动方法研究了圆截面螺旋管道内幂律流体的流动。

The flow of power-law fluid in a helical pipe with circular section has been studied using perturbation method.

采用摄动方法研究了圆截面螺旋管道内幂律流体的流动。

The isothermal time independent flow for power-law fluid in a helical pipe with circular section is studied with theoretic method and numerical method in the paper.

本论文在前人工作的基础上，采用理论方法和数值计算方法研究了幂律流体在圆截面螺旋管道内的等温定常流动。

First, if the nucleotide consists of a unit having circular symmetry about an axis parallel to the helix axis, the whole diffraction pattern is modified by the form factor of the nucleotide.

首先，如果核苷酸组成一个单位有一个圆形对称轴平行的螺旋轴，整个衍射图样是修改了外形的核苷酸。

Its coincidence rate with CAG was 89% in left coronary artery main stem, 93% in left anterior descending coronary artery, 68% in left circumflex coronary artery, and 48% in right coronary artery.

64排螺旋CT冠状动脉成像能较准确反应各支血管部位的狭窄程度，对左主干及前降支病变与冠状动脉造影检查符合率较高，在评价冠状动脉狭窄、定性和定量检测冠状动脉粥样硬化斑块等方面都有良好的临床应用价值。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。