“primary focal point”的概念、定义、翻译、参考文献-科学参考

单词	primary focal point
释义	primary focal point Physics 光学、声学光学 object-space focus物方焦点曾称“第一焦点(primary focal point)”。
随便看	Comité National pour la Défense de la Démocratie-Forces pour la Défense de la Démocratie CoML Comma comma comma category comma cloud system comma derivative comma-free code comma-like nebula command command and control command-and-control instruments command and data acquire station of meteorological satellite command and service module commandant commandant-escort commandant of cavalry commandant of cavalry by grace commandant of fleet-as-clouds cavalry command assistant decision command center of search and rescue command code command & communication shelter for civil air defence command,control and communication system command,control and communication system for nuclear weapon

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