1)  VOCs preconcentrator
预浓缩器
1.
Air sample was first frozen by liquid nitrogen,H_2O and CO_2 in the sample were eliminated in the VOCs preconcentrator,and then the preconcentrated sample was injected to gas chromatography and analyzed by mass detector.
利用大气采样罐对不同场所如居室、汽车、超市的室内空气进行采样,利用预浓缩器将气体样品冷聚焦,并去除水和CO2,然后自动将样品导入气相色谱质谱,分析其中的主要有机污染物。
2)  preconcentrator of urea
尿素预浓缩器
3)  down-film vacuum preconcentrator
降膜式真空预浓缩器
1.
This paper presents the application of down-film vacuum preconcentrator for heat re-covery,puts forward the problems and measures against them during the application.
介绍氨汽提尿素装置中使用降膜式真空预浓缩器回收余热的情况和使用过程中遇到的问题及解决措施、经济效益。
4)  Preconcentration
预浓集
1.
Study on the Determination of Trace Cu(Ⅱ) by DDTC Chelating Resin Preconcentration and Thin Layer Resin Phase Spectrophotometry;
螯合树脂预浓集薄层树脂相吸光光度法测定痕量铜的研究
5)  preconcentration
预浓缩
6)  Preconcentrator
预浓缩仪
1.
The Design of the Control System on Air Testing Preconcentrator;
空气分析预浓缩仪控制系统的设计
参考词条
补充资料：稀土浓缩蒸发器(甘肃稀土公司)


稀土浓缩蒸发器(甘肃稀土公司)


稀土浓缩蒸发器(甘肃稀土公司)
说明：补充资料仅用于学习参考，请勿用于其它任何用途。