“BK7”的意思、由来-开放百科全书

词条	BK7
释义	> Borosilicate glassOptics {{r from subtopic}}
随便看	3760 B.C. 3760 BC 3760 B.C.E. 3760s 3763 Qianxuesen 376 AEW (376) Geometria 376 (number) .376 Steyr 376th Air Expeditionary Wing 3770s 377 ABW (377) Campania 377 (number) 377th Air Base Wing 3780s 3782 Celle 378 AD (378) Holmia 378 (number) .378 Weatherby Magnum 3790s 379 AEW (379) Huenna 379 (number)

开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。