查询词典 parabola

Secondly,traditional calculation theory on configuration of main cable of cable suspension bridge was introduced such as parabola theory,segmental catenary curve method,segmental parabola method and segmental line method.At last,two calculation theories on the stability of bridge was put forth.

具体内容如下：(1)首先分析了影响自锚式悬索桥非线性的几种因素，然后介绍了悬索桥的传统线形计算理论——抛物线理论、悬索桥主缆线形计算的精确方法——分段悬链线方法以及分段抛物线法和分段直线法，最后介绍了桥梁稳定性计算的两种计算理论。

In order to discuss the rationality of various warping displacement modes, second-degree parabola, cubic parabola, fourth-degree parabola and cosine function are selected respectively. It has been demonstrated that these displacement modes have limitation to some extent, and a more reasonable mode needs to be developed.

为了探讨各种剪滞翘曲位移模式的合理性，分别选取二次抛物线、三次抛物线、四次抛物线及余弦函数等翘曲位移模式进行计算；结果表明，这些翘曲位移模式在一定程度上均存在不足，目前还缺乏一种更加合理的位移模式。

The formula of discharge varying with normal water depth in cubic parabola shape open channel uniform flow and the conditions satisfied by the optimal hydraulic cross-section in the cubic parabola shape channel were deduced according to the theory of open channel uniform flow .

根据明渠均匀流理论，推求了立方抛物线形渠道正常水深与流量关系的计算公式及其水力最优断面所满足的条件。

An elliptical parabola with the same dimensions would have smaller gain by about 1 dB in relation to this analyzed rectangular, with the same efficiency, because of smaller geometric surface of the elliptic parabola.

一个同样尺寸，同样效率的椭圆形抛物线反射器，比这个长方形反射器低大约1dB的增益，这是由于椭圆形抛物面几何表面小一些。

Results There was a linear trend between logarithmic X and Y, the equation of logarithmic curve was able to be fitted, There was a linear trend between logarithmic Y and X, the equation of exponential curve was able to be fitted, There was a linear trend between logarithmic X and logarithmic Y, the equation of power curve can be fitted. There is a parabola pattern between X and Y, the equation of parabola was able to be fitted.

结果 X取自然对数与Y作散点图有直线趋势，拟合对数曲线方程；Y取自然对数与X作散点图有直线趋势，拟合指数曲线方程；X取自然对数与Y取自然对数作散点图有直线趋势，拟合幂函数曲线方程；原始数据X和Y成抛物线关系，拟合抛物线方程。

Using C to write a parabola, which is a parabola of the program code, more rough.

详细说明：用C来编写抛物线，这是抛物线的程序代码，比较粗糙。

This paper studied the case that there is a known point of tangency of a circle and a parabola while the center of the circle is on the recession of the parabola.

应用数形结合的方法，研究了已知圆与抛物线有一个切点，而圆心在切点处抛物线的凹向的情形。

The vessel's upper deck camber is to be of knuckled line, and the knuckle camber is 150mm; poop deck has parabola camber of 150mm; compass deck is to have a parabola camber of 150 (half width of 12m).

本船上甲板梁拱为折角线，折角梁拱为150mm；首、尾楼甲板为抛物线梁拱150mm；罗经甲板为抛物线梁拱150（半宽12m时）。

The results showed that the developmental threshold of egg, larva and immature periods was 12.67, 13.86 and 13.53℃, respectively. It revealed parabola relationship between temperature and both generation survival and finite increase rates. According to the corresponding parabola functions, the optimal temperature for survival and population increase was 30.2 and 33.7℃, respectively, and the optimal temperature range for growth and development of C. maculates was between 30 and 34℃.

结果表明：四纹豆象卵期、豆内幼虫及蛹期、未成熟期发育点温度分别为12.67，13.86和13.53℃；温度与世代存活率及周限增长率均呈二次抛物线关系，根据相应抛物线方程可知，四纹豆象理论最适生存温度和最适种群增长温度分别为30.2℃和33.7℃，其生长发育繁殖的最适温区为30～34℃。

This text develops the tool and dialog box DCL languages to carry on the simple introduction to the AutoCAD two times, integrated the process to carry on the detailed introduction to the Visual Lisp and dialog box DCL language, and make use of the whole process that the Visual Lisp integrates with the dialog box DCL language the realization manufacture parabola, carrying on the detailed analysis to the concrete step, putting forward the basic design way of thinking, the end give make use of the living solid example of severals of the parabola.

本文对AutoCAD的二次开发工具和对话框DCL语言进行了简单的介绍，对 Visual Lisp与对话框DCL语言整合过程进行了详细的介绍，并利用Visual Lisp与对话框DCL语言整合实现制作抛物线的全过程，对具体的步骤进行了详尽的分析，提出了基本的设计思路，最后给出了利用抛物线的几个生活实例。

It is also known as one of the most poisonous naturally occurring substances.

它也被称为一个最自然发生的有毒物质。

The greatest stress is found at the location on the cross section where V is the largest.

最大应力出现在横截面上V为最大的地方。