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分贝毫瓦/平方米 | |
mil., air.def. | DB above 1 milliwatt per square meter |
兆赫 | |
gen. | megacycles per second; megahertz |
avia. | terahertz |
earth.sc. | megahertz; megahertzmillion cycles per second |
geophys. | megacycles per second |
IT | MHz |
oil | megahertz |
space | megahertz |
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DB above 1 milliwatt per square meter |
分贝毫瓦/平方米 : 2 phrases in 1 subject |
Air defense | 2 |