查询词典 tangent

According to this method, when variable slope is linked by beeline and arc that is tangent to the slope of the upper stream the relations between hydro-dynamic pressure and gradient angle can be obtained.

并应用该数值模拟方法，得出变坡处用直线连接以及用圆弧连接时的坡度角与动水压力之间的关系。

By means of uniting geometry with algebra, the arc length, tangent line, cotangent space and curvature of curve in four dimensional space are investigated, and the corresponding calculation formula in each cases are given.

用形数结合的观点研究了四维空间中曲线的弧长、切线、法空间和曲率问题，并给出了其计算公式。

The angle θ could be obtained by calculating the arc tangent of the signal ratio Vx/Vy through the interface circuit and PC processor.

当与被测转角θ的物件轴向相连的径向永久磁铁转动时，传感器给出了相对于被测角度的两种信号电压，通过接口电路和PC机组成的非接触式测量系统把信号转换为转角θ。

R1 o R1 Construct principle: The key in tangency principle is to find the center of the arc and the tangent position of the corresponding lines, line and arc, and arcs respectively.

作图原理圆弧连接作图的关键在于，找出连接弧的圆心位置及与两被连接线段连接处的切点位置。

Step 6 shows how the strokes' strength lies inward from the contact spot, as an arc to a tangent, and that head-on contact creates a right angle against the ball's flight line, 6B.

图7G。第6课展示了击球的力量来源于从触球点的内旋，是球切线上的一道弧线，迎头碰撞与球的飞行路线产生正确的角度， 6B。

Then, combined with the implementation of Arc Tangent function, FFT algorithm, Differential Positioning algorithm, and telecommunication module, the general proposal of algorithm module implementation is presented, and the design methods of practical algorithm module implementation is proposed, together with instances illustrating the advantage of standard algorithm modules.

接着，论文结合北斗用户机研制工作中开发反正切函数、FFT、广域差分算法、指挥机电文通信模块等算法模块的设计实例，归纳出算法模块实现的通用方案和实用化规范算法模块设计方法，并以若干案例说明搭建规范化算法模块的优势。

It is the first laboratorial experiment results of self-volume deformation of MgO concrete applied to the arch dam foundation of Dongfeng hydropower station in Guizhou province, the laws of self-volume deformation of MgO concete is conducted, the long-term expansion deformation value is reckoned, the arc tangent curve model of the concrete is presented to describe the characteristics of expansion deformation of the MgO concrete.

本文以在国内外首次将MgO混凝土应用于主体工程的贵州东风水电站拱坝基础混凝土的室内自生体积变形成果为例，对MgO混凝土自生体积变形的规律进行了研究，提出了MgO混凝土自生体积变形的反正切曲线模型，用以表达MgO混凝土的膨胀变形特性和推算MgO混凝土的长期膨胀变形值。

One channel of the DS-QPSK signal could be simplified by the high correlation orthogonality of PN code, and then phase error detection was implemented through the reference of detecting phase error for BPSK signal with arc tangent function.

PN码具有很好的相关特性，可以简化DS-QPSK信号中的一路信号，进而借鉴二相相移键控信号的反正切鉴相方式完成鉴相。

In view of the consecutive bursting problems of reheater tubes in Xinxiang Thermal Power Plant,the diagnosis tests at cold and hot state of reheater were carried out, thus the causes for reheater bursting were found out, and it was put forward that to employ arc tangent tertiary air to reduce flue gas temperature derivation, to replace part reheater tubes with TP 347 stainless steel tubes with better heat-resisting property etc.

针对新乡火电厂再热器连续爆管问题，进行再热器冷态和热态诊断试验，查明了造成再热器爆管的原因，提出用三次风反切减少烟温偏差，并将部分再热器管子更换为耐热性能更好的 TP347 不锈钢管等技术措施。

Applying theories of numerical analysis and higher geometry, the corresponding mathematical model of stem line is established according to different stems. Whereby, the centers, radii of the arc and its tangent points with the water-line can be found and the curve of arc radius is thus determined. A general formula for expressing stem curved surface is introduced.

应用数值分析和计算几何理论，根据船体首部线型特点，建立首柱轮廓线数学模型；计算水线首圆弧圆心、半径和切点，确定首圆弧半径线；给出首部曲面的通用方程式。

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。