发射平面 [
fā shè píng miàn]
plane of departure
- 由于奈米碳管具有极高的纵横比与极小的尖端曲率半径,因此奈米碳管有著超乎常态的电子场发射特性,低的场发射起始电压与大的场发射电流密度,使其为电子场发射平面显示器的良好材料。
Due to their high aspect ratios and small tip radii of curvature, carbon nanotubes possess marvelous electron field emission properties, viz. low turn-on voltage (E0) and large emission current density (Je), and have good potential for using as materials in electron emitters of flat panel display. - 粒子从许多网格发射体(细分平面)发射出来,这些发射体几乎是相同的设置,只是有些大小、疏密之分,等等。
There are many mesh emitters (subdivided planes) each one with almost the same configuration, some of them biggers, some other smallers, with higher density, etc. - 给出了一种能够在一维方向或二维方向精确确定物体位移和转动的光学纤维传感器.从一个大直径多模光纤中发射出的光,入射到一个由平凸透镜和平面镜组成的系统的曲面上,光经反射后,被小直径的多模光纤收集,经处理后确定物体的位移和转动.两者的分辩率分别达到微米量级和百分之一度.
In tis paper an optical fiber based sensor is presented which can enable the accurate determination of tilt and displacement in one or two planes.Light from a large core multi-mode fiber is launched onto the curved surface of plano-side-silvered plano-convex lens.The reflected light is recovered by small core multi-mode fibers and serves as the means for determining the displacenient of tilt.Their resolution can be micron and 0.01 degree respectively.
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