查询词典 enveloping surface

By the FEA model that the recharge effect had been taken into account, the surface settlement and the surface differential settlement of the ground surface which was out of the recharge position could be greatly reduced, the recharge effect at far foundation pit wasmuch more apparent than at the near position. By the FEA model that the water-seal effect had been taken into account, the surface settlement and surface differential settlement of the ground surface could be largely reduced; the reduction of the total settlement and the differential settlement increased as the length of water-seal wall grew.

考虑回灌作用的有限元模型计算分析表明：设置回灌井或者回灌排水沟都可减小回灌处以外的地表总的沉降和不均匀沉降，随着排水沟离开基坑边距离的增加，回灌点以外的总沉降量和不均匀沉降都减少，回灌井埋设深度对周围地表沉降影响较小；通过考虑止水帷幕的有限元模型计算分析表明：设置止水帷幕可大大减小基坑周围土体总沉降和不均匀沉降，随着打设止水帷幕深度的增加，基坑周围地表总沉降和不均匀沉降都减小。

Based on differential geometry and spatial engaging theory,a set of formula of conical surface double enveloping worm gearing had been derived and its figures,position and distribution had been depicted by graphs.

以微分几何与空间啮合理论为基础，推导了锥面二次包络圆柱蜗杆传动两次包络过程中的啮合方程和主要啮合性能指标方程，以图直观的表示出其形状、位置和分布状况。

Owing to the key conclusion, this paper lays emphasis on the possible ways of realizing the singular conjugation by single—enveloping method. It is proved that the hyperbolic normal arc surface and the involute helicoid both may conjugate in singular points on the condition of single—envelope.

在奇点共轭理论的工程实现方面，文中明确指出二次包络是获得奇点共轭的有效手段，但并非唯一手段，在满足特定的运动几何条件下，一次包络即可获得奇点共轭。

Survey method using an enveloping measurement surface over a reflecting plane.

在反射平面上利用包封测量表面的测量法

To improve the machining efficiency and precision of convex screws,a new method was put forward for inner whirlwind NC enveloping milling of screw curved surface.

为提高凸螺杆的加工效率和加工精度，将具有切削平稳、效率高等特点的传统旋风铣削技术与具有轨迹控制灵活等特点的数控技术相结合，提出了内旋风数控包络铣削螺杆螺旋曲面的新方法。

To improve the machining efficiency and precision of convex screw s,a new method was put forward for inner whirlwind NC enveloping milling of screw curved surface.

使用轴承测量仪器完成对滚子球基面凸度测量、凸形的判定，确定了测量方法，提高测量的准确性及测量效率。

Annual cutting norm of forest trees ; GM（1; 1） enveloping grey surface ; control

林木年采伐限额； GM（1； 1）包络灰平面；控制

Measurement of airborne noise emitted by machines; enveloping surface method, oxy-fuel gas and plasma torches and machines

机器噪声测量。空气载声测量。包面法。气焊及等离子焊喷嘴和机器

The amount of these gases is so high that it has already surpassed the earths load limit, thickly enveloping the surface of the earth and making the heat projected by the sun unable to be released normally back into outer space, causing global warming and the greenhouse effect.

这些气体数量太多了，远超过地球所能负荷，把地球表面厚厚的包围起来，让太阳射入的热量无法正常舒放回太空，做成全求暖化及产生温室效应。

This paper de-duces the equation of scroll case surface with the enveloping theory,builds the envelope sur-face of ellipsoides with variable radius by using the the method of constructing an ellipse withseveral arcs and presents a new and simple method fOr geometry moulding of scroll case sur-face.

蜗壳是水电站的重要部件之一，本文以包络理论推导了蜗壳曲面方程；并采用分段圆弧构造椭圆的方法构造了变径椭球包络曲面，为蜗壳曲面的几何造型提出了一种新的简便方法。

It's not quite as simple as that.

并没有那么容易。

It debuted in 1992 in Japan and the United Kingdom, and 1993 in the United States.

它首次亮相于1992年在日本和英国，在美国1993年。