鄭步京

Overview

Works:	1 works in 2 publications in 1 languages

Titles

示波管與顯象管原理和制造 by: 鄭步京; 袁宗範; 合 (Electronic resources)

白熾燈泡制造工藝 by: 陳遙芻; 鄭步京; 章維臣 (Electronic resources)