roundel

n.

圆形饰物，小圆盘；

复数：roundels

1. The assemblies are a direct replacement for older style incandescent bulbs, fitting into the roundel ring as a replacement for the existing roundel, reflector and bracket.
   这些组件可直接替换样式陈旧的白炽灯泡，适合于圆玻璃环，可替换现有圆玻璃、反射器和煤气灯。

Roundel
Roundel holder
COUNT-DOWN SIGNS AND ROUNDEL MARKINGS TRIALS
The Qumran Roundel and the mrḫyt: A Comparative Approach
The Qumran Roundel and the mrḫyt : A Comparative Approach
Roundel phacoemulsification technique for in-the-bag intraocular lens fixation
Antler Roundel Pendants from Britain and the North-Western Roman Provinces
The reproductive cycle of the roundel skate Raja texana
Age, growth and maturity of the roundel skate, Raja texana, from the Gulf of Mexico, USA
The Minoan Roundel and Other Sealed Documents in the Neopalatial Linear A Administration I-II by Erik Hallager; The Latest Sealings...