12hours after the door and windows were closed(Group A),30minutes after ventilaton(Group B),and 30minutes after application of an air purification equipment and ventilation(Group C).
[方法]在同等条件下,关闭门窗12h后(A组)、通风排气30min后(B组)、应用空气净化装置加通风排气30min后(C组)3种情况下测定取材室甲醛浓度、技术室二甲苯浓度。
Study of Indoor Air Cleaning Devices under the Light Irradiation;
TiO_2/ACF光催化的室内空气净化装置研究
Develop a Equipment for Air Purification by High Voltage Pulse Plasma
等离子、光催化耦合空气净化装置的设计与研究
Study on Sterilization Efficiency of Non-thermal Plasma (NTP) Air Cleaning Device;
非热放电空气净化装置杀菌效果的研究
Advance of Evaluation Techniques for Particle Removal Efficiency of Indoor Air Cleaners
室内空气净化装置颗粒物净化效果评价技术进展
Automatic Air Cleaning Device Based on 51 Series Single-chip Microcomputer and Human Pyroelectric Infrared Sensor
基于51系列单片机及热释电人体红外线传感器的自动空气净化装置
The Technology and Device Development for Purifying Indoor Air in Central Air-conditioning System;
中央空调室内空气净化技术及装置开发
Method of Evaluation for PM_(10) Removal Efficiency of Air-cleaning Devices in the Central Air-conditioning Ventilation Systems
集中空调通风系统空气净化消毒装置PM_（10）净化效果评价方法
exhaust after-treatment device
废气后处理净化装置
LOGO! in Air Dry without Heat Regeneration Purification Device
LOGO!在无热再生空气干燥净化装置中的应用
Research on the Performance of a Two-Stage Electrostatic Precipitator Used in Air Cleaners and the Application of Cleaners;
空气净化器内部双区静电集尘装置的性能及其整机的应用研究
Application of Ozonizer Controlled by Single-chip to Air Purification
基于单片机控制的臭氧发生装置在空气净化中的应用
Study on the Purification Efficiency and its Mechanism for New Kind of Flue Gas LAPD
新型烟气净化中试装置净化效果及机理研究
A carrier gas filter system is recommended to be installed on the Helium line (He).
在氦气管路前面建议安装气体净化装置。
Uwed as materiale gor furnace and exhaust gas cleaning systems of automobiles.
炉用材料，汽车排气净化装置用材料。
Cleaning equipments of controled air source for ship
GB/T12919-1991船用控制气源净化装置
glycol-amine gas treating plant
天然气净化和脱水用的乙二醇-胺装置
Test Study of Integrated Purification Assembly on Diesel Exhausts
柴油车综合型排气净化装置试验研究
One example is the clean air "produced" by installation of emission control equipment at large power plants or on new motor vehicles.
在大型发电厂或者新机动车上安装排污控制装置，从而净化了空气，这就是一个范例。