查询词典 spiral

The leaves of a giant lobelia plant, photographed on Mount Kilimanjaros Shira Plateau in Tanzania, spiral around the center.

意译：植物在自然界的模式。

Therefore, compared to the case without spiral arm perturbation, the curve F∝ log M, which is a measure of the formation rate of more massive clouds in the whole disk, is just displaced upwards and the amount of GMCs with intermediate mass, i.e., those with mass in the range between 10 5 and 10 6 M ⊙, will hardly be affected.

因此在整个星系盘上，与没有旋臂扰动情况相比，F∝logM的曲线只是相应地往上有一平移，而对形成的中间质量的巨分子云的数量基本没有影响

This paper analyze the stability of soil-nail wall with limit balanced analytical method, and assume the slip surface, destroy surface as dual fold line, circular arc line, parabolic curve or log spiral curve etc.

本文采用极限平衡分析方法对土钉墙内部稳定性进行了分析，滑动面、破坏面的形状假定为双折线、圆弧线、抛物线或对数螺旋曲线进行了描述。

The formation of tooth face is analyzed based on the theory of original curve and area as well as the logarithmic spiral polar coordinates equation.

提出了一种新型锥齿轮-对数螺旋线齿锥齿轮传动形式，并以基曲线和基曲面滚动原理为基础，结合对数螺旋线极坐标方程，分析了对数螺旋线以及对数螺旋线齿锥齿轮齿面的形成过程，建立其了齿面方程。

Groove is a series of recessed logarithmic spiral.

槽型是一系列凹进的对数螺线。

The principle and device of machining logarithmic spiral profile shaft with form milling cutter are introduced.

介绍了用成形铣刀加工对数螺线型面轴的原理和装置。

The automatic generation of logarithmic spiral is achieved by means of the language of VBA embedded in AutoCAD.

提出铲齿成形铣刀齿背曲线的最佳线形应是对数螺线，而后运用AutoCAD的内嵌编程语言VBA，实现了对数螺线齿背曲线的自动生成。

Based on the logarithmic spiral failure surface and combined with the characteristic line throry,a new computational method is proposed and procedure is prepared.

考虑对数螺旋线的破坏面并结合特征线理论，提出了一种新的浅埋条形板极限上拔力的计算方法并编制了程序。

However, logarithmic spiral can be used to substitute for the Archimedes curve to solve such problems and guarantee the stability of cutter machinability .

传统的阿基米德螺线齿背的铲齿成形铣刀在重磨前刀面后，切削刃上各点的后角将发生变化，从而影响刀具切削性能的稳定。

This is the logarithmic spiral geometric property, may explain why the humanity to the random orientation observation, the universe is accelerating to inflate.

这是对数螺线的几何性质，可以解释人类为什么向任意方向观察，宇宙都在加速膨胀。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。