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radio receiver
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radio receiver
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射电天文接收机
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radio receiver
射电天文接收机
把射电望远镜馈源输出的电磁辐射场信号经过放大和加工,使它成为与天体辐射成正比且可测量的一种探测器。
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petrochemical wastewater
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Petroglyph in Chulut River Valley
Petroglyphs within the Archaeological Landscape of Tamgaly
petrographic geomorphology
petrographic texture and structure
petroleum
petroleum accumulation
petroleum additive
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petroleum and natural gas migration
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petroleum asphalt coating
petroleum asphalt for airport pavement
petroleum asphalt for road pavement
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petroleum coking
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