题目内容
The followings are main functions of X-ray tube except_____.
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Tungsten will melt at what degree?
The voltage and waveform applied to the X-ray tube by a high-voltage transformer primarily determines the _____.
A thin metallic sheet (brass, copper, aluminum, etc) placed at the source to reduce effects of softer radiation is known as _____.
To produce X-rays, electrons are accelerated to a high velocity by an electrical field and then suddenly stopped by a collision with a solid body. This body is called ______.
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