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光的相速度
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光的相速度
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理学
〔光波与光波导〕
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phase velocity of light
光的相速度
单色光波传播的速度。
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National Convention Party
National Council of Churches in Australia,NCCA
National Council of Nigeria and the Cameroons
National Council of Women of Canada
National Council of Women of New Zealand
National Council on Education for the Ceramic Arts
national credit
National Crop Germplasm Bank
National Crop Variety Committee Tea Professional Board
National Cultural Industry Demonstration Base
National Cultural Industry Innovation and Development Research Base
National Cultural Information Resource Sharing Project
National Cultural Palace
National Cultural Park
National Cultural Security
National Culture and Technology Integration Demonstration Base
National Culture and Tourism Consumption Pilot City
national dangerous reservoir reinforcement special planning
national database on groundwater contamination investigation
National Day of the the People with Disability
National Day Top Ten Projects
national debt law
national defence engineering
national defence film
National Defense Committee of KMT
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