平面

Draw an auxiliary line or plane going through the point on the pyramid.

在棱面上过锥顶作一条包含该点的辅助线或辅助平面。

The theory and method of simulating axial symmetry field by plane resistance net-work are intreduced in this paper.

本文介绍了利用平面电阻网格模拟轴对称场的原理和方法，这种方法与目前采用的电解槽法相比，具有测试方法简便、重复性好等优点。

In this paper the principle of simulating an axial and plane symmetrical magnetic field by a resistance network analogue is analysed.

本文论证了兼有轴对称和平面对称性质的磁场的模拟方法以及有关的电流注入问题。

Porous media, as well as the axial symmetry plane seepage flow calculation.

详细说明：孔隙介质中的轴对称渗流以及平面渗流计算方法。

Considering the axial symmetry of the structure, the computation model can be simplified as a planar truss.

考虑到该结构是一种轴对称结构，将结构简化为半榀平面桁架，采用节点平衡理论进行分析。

WHEN A STRAIGHE LINE TURNS IN SPACE PARALLEL TO AN AXIS , IT GENERATES A CYLINDER . WHEN IT IS NOT PARALLEL , IT GENERATES A HYPERBOLID OF REVOLUTION OF ONE SHEET . A HALF-HYPERBOLOID IS THE THE IDEAL SHAPE FOR A BELL

这种柔和的平面在传说建筑中没有应用过，但是由于它具有良好的采光、传音和散重能力，所以高迪在柱子、柱头、屋顶，天窗和大钟中曾多次使用。

If the outward normal is negative, the shear stress is positive when in points in the negative direction of the coordinate axis which it parallels.

反之为负。例如：在X反方向的平面里，XY，XZ的值就为负。

If the outward normal is positive, the shear stress is positive when it points in the positive direction of the coordinate axis which it parallels.

如果该平面法向为正，如XY，XZ。则当剪应力方向与跟它平行的轴相同，则为正。

The vertical axis of a two-dimensional Cartesian coordinate system.

纵''。'坐标轴'。''笛卡尔平面坐标上的纵轴

The horizontal axis of a two-dimensional Cartesian coordinate system.

横''。'坐标轴'。''平面直角坐标系中的水平横轴

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了