Rotating the disc of the compound rest with an angle equal to half the apex angle of the cone.
将复式刀架盘旋转一个等于圆锥体顶角一半的角度。通过摇动复式刀架操纵柄手动提供进给。
Taking cordierite and topaz for example, the specific cone-apex Angle values are given, and the reason why the cone-apex angles are too small is analyzed.
并以堇青石和黄玉为例给出了具体的锥顶角数值大小，分析了锥顶角很小的原因。
The efficiency curves of blazed characteristic of sinusoidal grating is presented. And the influence of apex angle on diffraction efficiency of triangle grating is debated.
给出了紫外全息光栅的闪耀特性分布曲线并分析了三角槽形光栅顶角大小对衍射效率的影响。
With the help of a precise angle-measuring device, the apex Angle and the minimum deviation Angle of the prism can be measured; hence the optical refractive index of the glass.
借助高精度的测角仪器，就可测量棱镜的顶角和最小偏向角，从而得到光学玻璃的折射率。
With the help of a precise angle-measuring device, the apex Angle and the minimum deviation Angle of the prism can be measured; hence the optical refractive index of the glass.
借助高精度的测角仪器，就可测量棱镜的顶角和最小偏向角，从而得到光学玻璃的折射率。
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