00370nam a22001577a 4500003000700000005001700007008004100024082001500065100001700080245002200097250001400119260003400133300000800167490003200175650000500207MPLRDC20220104144421.0210129b           ||||| |||| 00| 0 eng d  a448.6 FBQ   a冯秉铨著  a今日电子学c  a第一版  ab科学普及出版社c1981  b平  a电子应用技术丛书; 1  a