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介质天线
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介质天线
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【超短波与微波天线】
释
dielectric antenna
介质天线
用低损耗高频介质材料制成的柱面表面波天线。
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ecological occupation-compensation balance
ecological operation
ecological perspective of learning
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ecological protection engineering
ecological protection of the Sanjiangyuan areas
ecological protection red line
ecological protection redline system
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