1.Concentrators in geological sciences elect either geology or geography.
主修地质学的学生要选修地质学或地理课程。
2.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.
她生产系列标准的科研和工业化的发、冷干机、浓缩仪和离心机,也可根据客订单要求生产和开发非标准。
3.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.