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symmetrical antenna
释义
symmetrical antenna
Encyclopedia
工学
【长、中、短波天线】
释
symmetrical antenna
对称天线
在馈电点将天线分为两半,这两半的几何结构形式和尺寸完全相同的天线。如菱形天线、鱼骨形天线等。反之,则称为不对称天线。
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land supervision
land supply
land surface hydrology
land surface model
land surface processes
land surface temperature inversion
land survey
land survey and statistics system
Land Surveying Ordinance
Land Survey Measure
land system
land system in developing countries
land tax
land tax regardless of household size
land temple
land tender,auction,listing
land tenure
land tenure disputes
land tenure management
land title
land to the tiller
land transaction
land transfer
land transport
land treatment of wastewater from livestock and poultry farms
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