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使电子注内空间电荷发散力、离心力和磁聚焦力之间达到平衡,使电子注没有波动或波动很小的电子注聚焦方法。
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Royal Commission on National Development in the Arts, Letters and Sciences
Royal Cortissoz
Royal Culture of Benin Kingdom
Royal Danish Ballet
Royal Danish Porcelain Factory
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Royal Dutch Philips Electronics Ltd.
Royal Dutch / Shell Group of Companies
Royal Exhibition Building and Carlton Gardens
royal family of Shang
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royal ferns
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royal gardens in Beijing of Ming and Qing Dynasty
royal gardens in Dadu of Yuan Dynasty
Royal Gardens in Yanjing of Liao Dynasty
Royal Gardens in Zhongdu of Jin Dynasty
Royal Gardens of Schonbrunn
Royal Greenwich Observatory
royal guard of the Southern Song Dynasty
Royal Institute for Cultural Heritage
Royal Institute of British Architects
Royalist Party
Royal Kiln of Song Dynasty
royal kiln of Yuan Dynasty
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