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ls1314521新蟲 (初入文壇)
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[求助]
求光纖通信解答一下
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Estimate the divergence and Rayleigh range of a Gaussian beam from a He-Ne Laser with =633nm and a beam width of 1.00 nm at z=0. After traversing 10 m through vacuum, what will the beam width be? 發(fā)自小木蟲Android客戶端 |
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