查询词典 logarithmic

The detailed comparisons between the higher—order near tip solution and the well—known modified Prandtl field are also given in this paper.For the compressible materials, in order to satisfy the higher-order compatibility equation of the rate of deformation in the centered fan sector, which is a quite difficult problem unresolved in the previous studies, a particular term must be added to the expansions of the stress components in the regular logarithmic power series adopted by many researchers before. A higher-order near tip field with tangential velocity jump ahead of the crack tip is derived first, of which the dominant terms are the solution widely accepted.

对可压缩材料，本文首先采用非规则的对数幂级数渐近展开方法，克服了过去研究中存在的中心扇形区变形率协调方程的高次渐近式不能被满足的困难，并得到了一个切向速度在裂尖前方存在间断的高阶渐近解，该解的主项就是目前被广泛接受的关于可压缩材料的尖端场解。

The Shannon-Weaver and Simpson indexes is 4.195 and 0.021 respectively,the evenness is 0.880 and 2.962.The species-abundance relationship fits logarithmic series distribution.

结果表明海南岛吊罗山山地雨林物种多样性指数Shannon-Weaver和Simpson指数分别为4.195和0.021，均匀度为0.880和2.962。

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。

Calculation and Analysis of the Contact Strength of Logarithmic Spiral Profile Connection

若改用对数螺线作为铣刀铲背曲线，则克服了阿基米德螺线的不足。

It is assumed that potential sliding surface of the soil in the back of the retaining wall is composed of logarithmic spiral arc and line.

假定挡土墙后土体潜在滑裂面由对数螺线滑动面和平面组合而成，根据挡土墙后土体薄层单元的平衡条件推导出粘性土层主动土压力的计算公式。

The correctness lays a theoretical foundation on further study of the processing technology of logarithmic spiral bevel gear, and thus, the new-style bevel gear can be machined conveniently and quickly.

证明了对数螺旋锥齿轮啮合原理的正确性，为进一步研究对数螺旋锥齿轮的加工工艺提供了理论基础，进而可以实现这种新型锥齿轮的方便快捷的加工。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。