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我们中的大多数不能分辨正切余切。Most of us can’t tell our secant from our cotangent.

割线的定义是一条通过曲线上两点的直线。A secant is defined as line passing through two points of the curve.

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所得脉冲包络为时间的双曲正割函数。The pulse envelope we obtained is a hyperbolic secant function of time.

这个命令是设置相关温度的。Modifies temperature-dependent secant coefficients of thermal expansion.

利用割线方法还研究了该类复合材料的非线性有效性质。Nonlinear dielectric property was also examined by means of secant method.

自动锁线机割线的操作要求是什么？Automatic sewing machine secant what are the requirements of the operation?

割线锯片升降，摆动全部由手柄调节，简便高效。Secant blade lift, swing all by the handle adjustment, simple and efficient.

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采用二分区间求根法或弦截求根法确定故障点。The roots are extracted in the root sections by method of bisection or secant.

松散岩块的切线模量和割线模量均与轴向应变呈指数相关性。Both the tangential modulus and secant modulus are exponential with axial strain.

从原点出发并连接该点所构成的割线的斜率即为曲线的平均函数。The slope of a secant drawn from the origin through the point is the average function.

所以描述亚周期双曲正割脉冲时应该使用更加严格的均方根脉冲宽度。The RMS pulse width should be used when the subcyle hyperbolic secant pulses is described.

主锯片及割线锯片倾角由精密角度仪直观显示。The main blade and the blade angle secant angle precision instrument by the visual display.

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静力正割剪切模量系由抗扭试验的扭矩-转动曲线决定。Static secant modulus of rigidity is determined from the torque-twist curve of torsional test.

窄带和宽带双曲正割脉冲光束的解析传输式。Analytical Propagation Expressions of Hyperbolic Secant Pulsed Beams with Narrowband and Broadband.

将割线刚度引入弧长法进行计算，以求解非线性有限元问题。The secant rigidity is used for the are-length method to solve the nonlinear finite elements problems.

啁啾系数的大小和符号对双曲正割脉冲光束空间强度的分布有不同的影响。The sign of the chirp also affects the spatial intensity distribution of the ultrashort hyperbolic secant pulsed beams.

进一步讨论了弦割法，给出了弦割法的一般形式，相信在方程求根的近似计算中有着重要的作用。In this paper, the chord secant method is further studied, and then some general forms of chord secant method are obtained.

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当初始功率等于临界功率时，可以近似得到双曲正割型空间孤子。When the initial power equals the critical power, the hyperbolic secant shaped spatial soliton can be obtained approximately.

同时指出了本文研究工作不足之处，希望能为钻孔咬合桩工艺在西安地区的应用起到一定的指导作用。This study also points out the shortcomings, hope to play a guiding role of the Secant Piles technology application in Xi'an area.

从傍轴波动方程出发，给出了超短双曲正割脉冲光束的解析解。By starting from the paraxial wave equation, the analytical expression of the ultrashort Hyperbolic Secant pulsed beam are deduced.