The time-frequency plane of a standard OFDM system is a rectangular grid.
标准OFDM系统设计的时-频面为矩形网格。
The design standard of motorway is very high, especially in plane, vertical and transect face.
高速公路平、纵、横设计技术标准相当高，路堑边坡是其最为普遍的内容之一。
The pure plane wall switch and the plug have the international advanced standard.
纯平面墙壁开关和插座具有国际领先水平。
The pure plane wall switch and the plug have the international advanced standard.
纯平面墙壁开关和插座具有国际领先水平。
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