弦

Mathematics: Understands and applies basic and advanced properties of the concepts of geometry; Use the Pythagorean theorem and its converse and properties of special right triangles to solve mathematical and real-world problems; Understands the basic concepts of right triangle trigonometry (e.g., basic trigonometric ratios such as sine, cosine, and tangent); Uses trigonometric ratio methods to solve mathematical and real-world problems (e.g., determination of the angle of depression between two markers on a contour map with different elevations); Uses properties of and relationships among figures to solve mathematical and real-world problems e.g., uses the property that the sum of the angles in a quadrilateral is equal to 360 degrees to square up the frame for a building; uses understanding of arc, chord, tangents, and properties of circles to determine the radius given a circular edge of a circle without the center

数学：理解和应用几何概念的初级和高级特性；用毕德哥拉斯定理、逆定理以及特殊直角三角形性质解决数学的和现实世界的问题；理解基本的直角三角形三角比；运用三角比方法解决数学的或现实的问题。（等高线图上的两个标记之间的俯角确定）运用形体之间的关系及其属性解决数学的或现实的问题（利用四边形内角和等于360度来为建筑物框架取正，运用弧，弦，切线和圆的性质确定缺少中心的一段圆弧的圆心

In this paper. we discuss the history origin of integral geometry, its product anddevelopment in the introduction. Also. the kinematic in-variant density formulas forpairs of needles and lines in R~2 and R~3 the concept and properties of chord-powerintegrals of a convex body are introduced in brief.

本文在绪论部分综述了积分几何与几何概率的历史渊源及它的产生与发展，简单介绍了R~2和R~3上点偶、线偶的运动不变密度公式以及凸体的弦幂积分的概念和性质。

So we mention another geometricprobability problem which is the geometric probability of the intersection of pairs ofintersecting lines belonzs to convex body K in R~2 by using the concept of doublechord-power integrals and a kinematic invariant density formula for pairs of lines.

利用R~2上双弦幂积分的概念和线偶的运动不变密度公式，提出了另一个几何概率问题：R~2上两根与凸体K相交的小针依附在两直线上，求两直线的交点落入凸体K内的几何概率。

Give praise to the Lord on the corded instrument; make melody to him with instruments of music.

33：2 你们应当弹琴称谢耶和华，用十弦瑟歌颂他。

In order to help prevent an ulcer from forming while on cortisone, one should take Tums three times a day.

为了要帮助阻止一种溃疡在可体松上的时候形成，一应该一天三次拿弦音器。

The Green-Schwarz IIB superstring on AdS〓S〓 background can be considered as a non-linear σ model where the fields take values in the coset superspace 〓.

在AdS〓S〓背景下的IIB超弦可以看做是在陪集超空间〓上的二维非线性σ模型。

The Green-Schwarz IIB superstring on AdS5 S5 background can be considered as a non-linear a model where the fields take values in the coset superspace The superstring action has global SU(2,2|4) super-invariance and local K symmetry.

超弦的作用量采用Green-Schwarz的形式，它具有时空整体的SU(2，2|4)超对称性以及世界面上的局域的Κ超对称性。

Triggering off the free oscillation of the reinforced bar by amplifying the triggering signal of the piezoelectric ceramic sensor by the emitter coupled oscillation circuit , we have measured the oscillation frequency of various reinforced bars, and then we can calculate the magnitude of the corresponding pre stressing force accor.

论述了振动法测量钢筋的预应力的新方法，振动触及压电陶瓷传感器产生的电信号，通过双稳态触发振荡电路，经放大后启动钢筋自由振动。根据弦线振动频率和所受张力之间的关系，测量出不同型号不同长度的各类钢筋的频率，从而得出对应钢筋的预应

Instrument:Balalaika,Jaws Harp,Stell Guitar,Dub.Bass,Synth Sequence, Triangle,Tamburin,Cowbell,Ethnic Percussion.

配器：三角琴，口弦，民谣钢弦吉他，爵士低音贝斯，合成音序，三角铁，铃鼓，牛铃，民族打击乐组。

A smile is a curved line that sets things straight.

笑容是一条曲线，却能使事情平直如弦

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。