| 1. | The authors show that the hyperboloid of one sheet and the hyperbolic paraboloid are ruled surfaces .
作者证实：单叶双曲面和双曲抛物面是直线曲面。 |
| 2. | The underlying method is based on the simple wave solutions of a system of hyperbolic partial differential equations .
基本的方法是以双曲型偏微分方程组的简单波解为根据的。 |
| 3. | Indeed, the reader who is slightly familiar with tessellations of the sphere, the eaclidean plane and the hyperbolic plane, can easily prove the following result .
事实上，稍微熟悉球面、欧几里得平面和双曲平面的分格的读者，都能容易地证明出下面的结果。 |
| 4. | A class of the first order nonlinear hyperbolic equation
一类非线性一阶双曲方程 |
| 5. | Returns the hyperbolic sine of the specified angle
返回指定角度的双曲正弦值。 |
| 6. | Some keys of construction of hyperbolic cooling tower
双曲线冷却塔施工的技术要点 |
| 7. | Returns the hyperbolic cosine of the specified angle
返回指定角度的双曲余弦值。 |
| 8. | Returns the hyperbolic tangent of the specified angle
返回指定角度的双曲正切值。 |
| 9. | The range of super - brownian motions on hyperbolic space
双曲空间上超布朗运动的范围 |
| 10. | Blow - up of solution for a nonlinear hyperbolic equation
一非线性双曲型方程解的爆破 |
