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
- prevalent-epidemic-pathogens
- prevariety
- preventable cases in neighborhoods
- preventer
- preventing collisions at sea
- preventing further attack of malaria
- preventing natural disasters laws
- Preventing suicide: a resource for media professionals
- Preventing Suicide：A Resource for Media Professionals
- prevention and control forest biological disaster
- prevention and control law on meteorological disaster
- prevention and control of biosafety and biosecurity
- prevention and control of bird strike at airport
- prevention and control of feed microbial contamination
- prevention and control of infectious disease in railway
- prevention and control of malodorous gases
- prevention and control of microbial pollution in space cabin
- prevention and control of mineral exploitation secondary geological hazards
- prevention and control of poisonous and weedy herbaceous plants in grasslands
- prevention and control of port pollution
- prevention and control of vector in the railway station and train
- Prevention and Control System of Social Public Order
- prevention and control techniques for infectious diseases of livestock and poultry
- prevention and repair measures for ageing of hydraulic structures
- prevention and repair measures for fissure on hydraulic structures