近场
1. 近场：在距离方面,近场(near field)干扰以电场方面产生的问题较为显著,这是由於电磁场的特性,取决於辐射源的形成关键,例如线性导体本身的高电压所形成的辐射源.
2. 近区：此区域被称为近区(near field). 但在深入人体的聚焦点,接收回波将异常的微弱,需要放大上千倍乃至更多. 此区域被称为远区(far field). 这两个区域分别处于接收电子器件所必须处理的两个极端. 在高增益模式(远区)下,
3. 近端场：near 近、靠近 | near field 近端场 | necklace microphone 颈挂式传声器
4. 准域：准线||directrix | 准域||near field | 准圆||director circle
1. Zhu suggests the choir's members enrich their knowledge with field trips, such as traveling to a village near the city.
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2. The man was spotted by a local woman coaxing the Labrador retriever into the woods near a ball field.
3. In a corn field near the Guanting reservoir in suburban Beijing stand 33 towering white wind towers.
4. Officials said the crash followed the sudden decompression of the jet, which came down in a field near a village.
5. Gray Davis said the pilot issued two mayday distress calls after takeoff from Brackett Field, a small airport near the park on a lake.
6. Gray Davis said the pilot issued two mayday distress calls after takeoff from Brackett Field, a small airport near the park.
7. It was as if the overwhelming stench of alcohol had created a force field around him so strong that nobody dared go near.
8. The major concern is with the pitch area near the goals, where the field is not properly leveled.
9. The spilled oil has also been detected in seabed sediment samples taken near the oil field.
10. It would have been unthinkable two years ago, when the local players all finished near the bottom of the field.