bi-frequency system是什么意思

用法例句

Design of the reflector shape for dual frequency base-station antennas;

双频基站天线中的反射板形状设计

On the basis of different behaviors of alternative electromagnetic field for induction and electromagnetic shaping, the process of dual frequency electromagnetic shaping of molten metal was firstly presented.

从固态金属感应加热熔化和液态金属电磁成形两个角度出发 ,讨论了金属熔体双频电磁成形中的频率选择 ,物理量的分布以及两种双频电磁成形的试验过程。

On the basis of the theory of electromagnetic shaping, the concept of dual frequency electromagnetic shaping of liquid metal was presented, which mean that the one frequency electromagnetic field is used to melt the solid metal above its melt temperature and the other frequency electromagnetic field is used to make the liquid metal to a final shape.

对液态金属电磁成形的物理和数学模型进行了分析 ,提出了双频电磁成形的方法 (利用两种频率的电磁场实现固态金属无接触加热熔化和熔化后的金属无模壳电磁成形 )和原理。

Design of mutimode & dual-frequency microwave sintering furnace;

多模腔双频微波烧结炉的设计

Novel Design of an H-shaped Dual-frequency Microstrip Antenna;

新型h形双频微带天线的设计

Design of Dual-frequency and Dual-circular-polarization Microstrip Antenna;

双频双圆极化微带天线实验设计