Rectangle metal waveguide slot-microstrip coupling structure is used to feed series-fed microstrip patch linear array, thus a planar array is obtained.
该天线阵采用矩形波导宽边纵向缝隙耦合微带线结构给串馈微带贴片线阵馈电，从而构成二维平面阵。
2
The Fed then doubled reserve requirements in a series of steps.
接下来，美联储采取了一系列步骤，将法定存款金上调了一倍。
3
The Fed has cut interest rates to near zero and announced a series of unprecedented measures to stabilize the financial markets.