对圆的

And the result is sub-pixel accuracy. The least squares estimator circle detection algorithm is faster than Hough transform.

最小二乘圆检测法较Hough变换计算速度快，对由光照引起的边缘缺失有一定的适应性。

Through morphological study, biophysical and biochemical tests ,we discovered that this strain was a kind of osmophilic yeast and can fermented glucose,sucrose and maltase.

分离筛选到了一株产赤藓糖醇能力高的菌种B84 5 ，通过对B84 5的形态、生理生化特性试验，发现该菌耐高渗，能发酵葡萄糖、蔗糖、麦芽糖，细胞为圆形、椭圆形，单边或多边芽殖，有真菌丝，在固体培养基上培养 7d后颜色开始变深，由黄色变成褐黑色，参阅真菌鉴定手册，初步鉴定为圆酵母属菌 Torulasp。

We studied the natural convection in narrow double-side heating arc by mock-up tests and numerical simulation in this thesis.

本文对双面加热的圆弧形窄缝通道内重水的自然对流进行了模化试验和数值模拟。

Secondly, we consider the stability problem of a more widespread class of feedback interconnected system, which can allow the nonlinear operator to have a deviation. And some stability criteria are presented too.

并将其应用于绝对稳定性问题，得到了时变的圆判据，也给出了多输入多输出情况下的一些判据，这些结果对非线性环节是否解耦不作要求。

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。

By Visual Basic 6.0 program, taken the distance between hole 200mm and buried depth 120～150mm as the optimization goal, the most optimum parameters range of the mechanism was obtained as follows: the initial angle between planet frame and the line formed from spraying-fertilizer needle-tip and planet wheel axle was -45°～-40°, the initial angular displacement of planet frame was 40°～50°, the distance between spraying-fertilizer needle-tip and the planetary gear axle center was 280～300mm, simultaneously, the semi-major axis of elliptic gear was 29.364mm, the teeth quantity was 23, the ratio of semi-minor axes and semi-major axis was 0.958, the radius of circular gear was 25mm.

对该机构进行运动学分析，建立了数学模型，以穴距200mm和入土深度120～150mm为寻优目标，应用Visual Basic 6.0软件编程得出满足机构运动要求的最优参数范围为：喷肥针尖和行星轮轴连线与行星架的初始夹角-45°～-40°、行星架初始角位移40°～50°、喷肥针尖与行星轮轴心距离280～300mm，此时椭圆齿轮长半轴29.364mm、齿数23、短半轴与长半轴比0.958，正圆齿轮半径25mm。

The adjustment principle of the system is analyzed and the transmission curve under the different rotation angle of circular polarizer is shown.

对衰减系统的调节机理进行了分析，并给出圆偏器旋转不同角度下系统的透射曲线。

It is difficult to get eigen equation of the regular polygon cross section waveguide.

其中平板波导和圆截面波导已经得到了比较充分地研究[1-2]，但对正多边形截面波导的研究，一直没有简便有效的方法。

Society Tuesday, May 20, 2008BOULDER, Colorado, AP — It wasn't exactly pistols at 30 paces, but police say a security company supervisor and a restauranteur shot each other with Tasers in a "bonehead" confrontation over parking.

圆石市，科罗拉多州，美联社—这并不完全是西部片中枪手相隔卅步的拔抢决斗，但警方表示日前一名保全公司主管与一名餐厅老板因停车纠纷，来了一场「愚蠢」的电击枪对决。

By means of the numerical methods, the root of the resonance frequency equation is solved, and by means of Ansys software and the finite element method, the torsional vibration mode of the thin ring is analyzed, and the academic value and the simulant value of the resonance frequency are compared.

利用数值方法，求出了共振频率的理论值；并利用Ansys软件，对薄圆环振子进行了有限元模拟，得到了其共振频率的模拟值。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。