ring-source green function 环状green源势函数
Ring light source 环形光源
quadrate ring piston source 方环活塞声源
system of ring piston source 环形活塞系统
ring-shaped source distribution 环形源分布
ring pipe with single source 单源环型管道
Point Source and Guard Ring 点电荷与屏蔽环
So Farihi thinks that the trace elements must have come from another source: remnants of rocky planets, forming a ring of debris that slowly rains down on the white dwarf.
因此Farihi认为痕量元素肯定来自另一来源：岩石行星的残骸形成的碎屑环，慢慢地向白矮星掉落。
A matching source method is presented for analysing microstrip hybrid ring power divider in this paper.
介绍了一种分析微带混合环功率分配器用的匹配源法。
环形光源。
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