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继1957年4月召开的徐家汇观象台授时工作座谈会之后,该台受科学院数学物理学化学部的委托,于1957年10月9—11日邀请全国主要测量部门、有关研
Following the symposium on timing work of Xujiahui Observatory in April 1957, commissioned by the Department of Mathematical Physics of the Academy of Sciences, the National Invitational Measurement Department was invited from October 9 to October 1957,