bō duàn
意思解释:(Wave band)无线电广播中,把无线电波按波长分成的段。如:长波;中波;短波;超短波。
按无线电不同的波长分成的段。1955年1月《无线电》第1期:“使用无线电微波的探测术(雷达),借导体和某些物体在微波波段内能够反射电磁波的作用,把短促的脉冲电波经定向天线发射出去,再用定向接收天线将反射回来的部分电能收…
By radio different wavelengh divides paragraph. In January 1955 radio the 1st period: Gan of dream of basketry A Chinese-style unlined garment knocks at Piao ⒉ ǖ to suckle) of radar of the that tell dainty, borrow conductor and certain object to be able to reflex the action of electromagnetic wave inside microwave wave band, emit short pulse electric wave via directional antenna go out, directional receving antenna will reflex reoccupy the partial electric energy that come back closes...
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