查询词典 enveloping surface

In this report, based on initial data array of annual increase of growing stock, GM(1, 1) enveloping grey surface is set up, and predictive curve is obtained by fitting initial data with differential equation according to mecha- nism of GM model. Scientific basis has been provided for determining the optimum annual cutting norm.

为合理采伐利用林木资源，本文根据全区林木年蓄积增长量原始数据列，建立GM（1，1）包络灰平面，并按GM模型建模机理，用微分程拟合原始数据，求得预测曲线，使预测值落在栽一范围内，为确定最佳年采伐限额提供了科学依据。

A set of formula of conical surface double enveloping worm gearing had been derived and its figures,posi- tion and distribution had been depicted by graphs.

推导了锥面二次包络圆柱蜗杆传动过程中的啮合方程和主要啮合性能指标方程，以图表表示出在不同参数下其接触线、啮合界限线、根切界限线的分布图，对此种蜗杆副在砂轮的不同半径下的啮合特性进行了比较，为这类蜗杆传动中蜗轮滚刀的设计制造提供了理论基础。

Measurement of noise emitted by machines; Airborne noise measurement, enveloping surface method; Woodworking machines; Special specifications for final trimming machines and edge lipping and banding machines

机器噪声测量。空气载声测量。包面法。木工机床。精切边机胶合加工机床的特殊规定

Abrasive disk for accurately grinding TI worm,as well as grinding method similar to that for globoid worm or planer enveloping hourglass worm,is used to machine hourglass worm,making the TI worm match with the worm wheel which has the same tooth surface shape as that of abrasive disk,and thus forming a new-style worm gearing .

采用精确磨削TI蜗杆的砂轮，用类似直廓环面蜗杆或平面包络环面蜗杆的磨削方法加工环面蜗杆，使该蜗杆和齿面形状与砂轮曲面相同的蜗轮相配合，形成一种新型蜗杆传动，给出了这种传动蜗杆副齿面的数学模型，并通过计算机仿真得出了这种传动蜗轮齿面上接触线的形状及分布特征，初步分析了其啮合特点。

In the design of interior space, the enveloping curve of head is used to research the design of interior space in CATIA , a new concept of space surface is presented for the design of the interior space.

本文在CATIA平台下运用人机工程学理论对汽车室内设计进行了系统的研究，充分体现了CATIA中人机工程学理论在汽车室内数字化设计与评估过程中的直观、快捷的优越性。

This process avoids premature closure or convergence to surface multiple possibilities, opportunities, and threats that could lie within the fog of unknowingness enveloping the company's future.

这个过程避免81，991或衔接表面多种可能性，机会并威胁说，能做到的迷雾unknowingness络公司的未来。

Based on the gear geometry of the double enveloping hourglass worm gearing, the tooth surface of the wheel, which is composed of the so-called the original and new contact surfaces, is derived.

基于齿轮几何形状的双包络环面蜗杆的齿面的车轮，后者是由所谓的原始的和新的接触面，导出。

The meaningful regions obtained by range image segmentation correspond to the surface patches of 3D object.The 3D surface patches are then reconstructed by the algebraic surface fitting method;the surface parameters are estimated by solving generalized eigenvector problem. The geometric model of 3D object is constructed from reconstructed surface patches by using CAD geometric modeling tool GEOMOD.

首先通过编码光栅方法获取三维物体的深度图象，并采用数学形态学的方法加以分割，然后利用代数曲面拟合手段对分割后的三维曲面片进行重建，并使用CAD几何建模工具由重建的曲面片构成物体的几何模型。

This paper on basis of surface's local principle.Through discussing the Gauss mipping image of the surface's asymptotic curve and the camber between any two directions of surface and the developable surface to illustrate the impact on surface of Gauss mipping.

文章以局部曲面的基本理论为基础，通过对曲面的渐近曲线、曲面上任意两方向的夹角和可展曲面的高斯映射象的讨论来说明高斯映射对曲面的影响。

In this paper four non-spherical surface types have been chose, ellipsoid surface, parabolic surface, pointed arch surface and conical surface. Base on the best fineness ratio, four surfaces are modeled, and their properties are analyzed in detail.

本文选择椭球面、抛物面、尖拱面、圆锥面这四种非球面面型整流罩，在基于整流罩最优的长径比的基础下，对各种情况分别进行建模，并对其光学性能进行了详细分析。

It's bell can reach over a meter in diameter.

它的身体最大可以达到直径1米多。

Now they are overdue and I shall have to pay a fine.

现在他们过期了，我不得不付罚款。