You can read these pictorials when you are waiting for me.当你等我的时候,可以读这些期刊.We have some magazines and pictorials in English.列车员:我们有英文的杂志和画报.We have many books, magazines and pictorials.列车员:我们有很多图书 、 杂志和画报....
描述两个功率电平比值的单位.A unit that describes the ratio of two power levels.要使计数器正常工作,正向和逆向控制输入电平必须始终相反.For proper operation the forward and reverse direction - control inputs must always be complementary.如旁瓣电平过大,很多科研工作者都在设法解决这些问题...