World Radio Day was created in 2012 by the Member States of UNESCO, and adopted by the United Nations General Assembly in 2013 as an International Day.
世界广播日于2012年由联合国教科文组织成员国发起，2013年由联合国大会通过，正式将其列为国际日。
This Paper discusses the general procedure and method of work study on assembly line through a radio recorder assembly line instance.
本文以收录机装配流水线工作研究为例，讨论了工作研究在流水线上应用的步骤和方法。
A simple analysis of the superheterodyne AM radio circuit and the principle of assembly and debugging.
简朴分析了超外差式调幅收音机电路的工作原理及其组装和调试。
A simple analysis of the superheterodyne AM radio circuit and the principle of assembly and debugging.
简朴分析了超外差式调幅收音机电路的工作原理及其组装和调试。
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