查询词典 unit circle

In this paper,it is proved that a Minkowski plane with π/2-property,whose unit circle is Radon curve,is an inner product space .

证明了单位圆是Radon曲线，且具有π/2性质的M inkowski平面，是内积空间

Further, the mapping function from the simply connected region of flat-plate to the unit circle is acquired, and based on this, the mathematical representation of transitional surface is established.

最终，构造壁板外形单连通域到单位圆周的映射函数，并以此建立壁板挤压模型腔曲面数学方程，利用三维造型软件完成了复杂型材挤压"流线型"过渡曲面的三维建模。

By the properties of k-th order symmetric function , we obtained some estimations of integral mean value of the solutions of the boundary value problems for some kind of special partial differential equations in Dk which can be changed into Laplace equations in the unit circle by way of suitable transform .

另外，D_k上的某一类特殊的偏微分方程经过适当变换后转化为单位圆上的Laplace方程，其边值问题的解的积分平均估计可由k次对称化函数的性质较好给出。

Networked control system is stable on condition that this circular area is in a unit circle.

若此圆形区域在单位圆内，网络控制系统就是稳定的。

The unit circle hides the wings of the distribution and even the median will generally result in biased estimates.

单位圆内隐藏的翅膀分布，甚至位数通常会导致偏见的估计。

Actually, the unit circle provides us an example of cut* space.

显然，单位圆周就是cut~*空间的一个典型的例子。

Eight, Does not need cooling at the season, hot water unit circle groundwater, there is no minimum evaporator water flow problem.

、在不需要供冷的季节，热水机组循环地下水，不存在蒸发器的最小水流量的问题。

The minimum phase system demand all zeros are within the unit circle.

所谓最小相位，要求所有零点都在单位圆之内。

The sign of a complex number finds the complex number of the same direction found on the unit circle.

一复数之符号数乃得出单位圆上，一个方向与原复数相同之复数。

Discrete-time Fourier transform is essentially the unit circle Z transform.

离散时间傅里叶变换实质上就是单位圆上的Z变换。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。