primary surface

The light source is located at the center of vertex curvature of the primary, and the coefficients of dummy surface are deduced from primary mirror.

用法线模拟反射面代替主镜时，光源位于主镜顶点曲率中心，模拟面的系数由主镜参数决定。

Measurement of the focal plane with position sensitive detectors Otherwise, using Off-screen to save data and using Bit to transfer data to the primary surface.

上述条件不满足时，使用离屏表面作为图像存储区，并使用位块传送方法BIt传递离屏表面数据到主表面以完成图像的显示。

At the primary stage of drying, the maximum value of elastic tension strain of the timber surface increased with drying temperature rising, and decreased with increment of equilibrium moisture content ( EMC).

干燥前期，木材表层伸张弹性应变最大值随着温度和平衡含水率的增加而减少，木材表层塑性应变则随平衡含水率的增加而增加。

The experiments indicated that asperities of roll surface plow and stick to the aluminum strip surface, and lubrication oil film in deformation zone shields surface topography of aluminum strip are the primary reasons of surface damage of cold rolled aluminum strip.

实验发现：轧辊表面微凸体对铝板表面的犁削与粘结作用，以及变形区内润滑油膜对铝板表面形貌的屏蔽作用是冷轧铝板表面损伤的主要原因。

ST bumper used to resist shock is a pivotal part in railway vehicle transportation. As primary load-transfer component of this part, thrust cone required very high precision and surface quality.

ST型缓冲器是铁路车辆运输过程中用于抗冲击的关键部件，推力锥作为其中的主要传力零件，其精度和表面质量要求都非常高。

Problems: The primary stress to which the surface of the mould is exposed are thermal shock, abrasion and chemical reactions between the liquid alloy and the iron in the steel mould.

问题：压铸模具表面主要面临的问题有热冲击、磨损、液态合金与模具钢的化学反应等。

The surface shape accuracy of the primary mirror can be greatly improved through raising the machining testplate accuracy and using the combined processing mirror surface.

提高加工基准的精度，并采用组合加工镜面，可以大大提高主镜的面形精度。

Using the light intensity of the surface of object and the rendering models of primary elements to render the every primary element so as to obtain the 3D geometry texture;

在绘制阶段，利用所获得的光照信息和画元的绘制模式在各分点处绘制画元，以获得符合物体表面总体明暗调子的几何纹理；

We saw racial tensions bubble to the surface during the week before the South Carolina primary.

在南卡,初选前的几周里我们看到种族内在的张力问题渐渐浮现.

A primary effect is so obtained for the testing of surface and underground samples.

用以解决地面或井下未知层位样品的判别归属问题，经地面和井下验证取得初步成效。

Modeling of Segmented Primary Mirror Surface Control System for Space-based Telescope

空间望远镜分块式主镜面形控制系统建模