concentrator

Concentrators in geological sciences elect either geology or geography.

主修地质学学生要选修地质学或地理课程。

Biotron, Inc manufactures a wide range of standard and configure-toorder laboratory, research and production-scale fermentation systems. freeze dryer, speed vacuum concentrator and centrifuges.

她生产系列标准科研和工业化设备、冷干机、浓缩仪和离心机，也可根据客订单要求生产和开非标准设备。

A new kind of ferromagnetic collector type fiber-optic current sensor which combines a nubbly magneto-optic material with a ferromagnetic concentrator ring is designed in this paper.

设计了用块状磁光材料与集磁环相结合集磁式光纤电流传感器。