... gleam half-angle 束半张角 half field angle 半视界角 Half adjustable angle 靠背半躺可调 ...
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half-field angle 半视场角
angle of half field-of view 半视场角
far field divergence half angle 远场发散角半宽度
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The machine is the special equipment used for Angle steel marking, Punching and Half-automatic production in the field of power and telecommunication.
该机为电力电讯角钢塔进行角钢打字、冲孔半自动化生产的专用设备。
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