fokus

fokus

1) The focal point on which the electron beam converges after passing through the beam magnet. 2) The area on the surface of the target that intercepts the beam of accelerated electrons. If the size of the focal spot is kept small, x-ray treatment fields.

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行业/领域：医疗设备
类别放射设备
Company: Varian
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sumrak

The time between dawn and sunrise, and between sunset and dusk. Sunlight scattered in the upper atmosphere illuminates the lower atmosphere, and the ...