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相关概念视频

Thomson's e/m Experiment01:19

Thomson's e/m Experiment

In a beam of charged particles created by a heated cathode, the particles move at different speeds. However, many applications need a beam with uniform particle speeds. An arrangement known as a velocity selector uses electric and magnetic fields to pick particles with a particular speed from the beam.
A particle with charge q, speed v, and mass m enters an area from the top, where the magnetic and electric fields are perpendicular both to the particle's motion and to one another. The magnetic...

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A Murine Orthotopic Bladder Tumor Model and Tumor Detection System
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A Murine Orthotopic Bladder Tumor Model and Tumor Detection System

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贝尔实验室的底部出来了.

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    概括

    No abstract available in PubMed .

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