艺术学 【摄影光线】 释 concentrator;spotlight 聚光罩 一种可以将光线导向一个特定的范围（通常是小的圆形面积），而不影响光线强度的圆锥形灯罩。 工学 [纯化设备] 释 concentrator 浓缩仪 利用离心力、加热和外接真空泵来进行溶剂蒸发，高效率回收分析样品的设备。
concentrator ①聚能器 ②浓缩器
网络与数据通信 有线网络 释文 concentrator 集中器
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