At the entrance of the oven, the exhaust air equipment discharges volatilized solvent in order to avoid exhaust gas participating in the second circulation and ensure safety.
烘箱入口处安装前置排风，可将初期挥发的溶剂排出，废气不参加二次循环，确保安全。
2
Paper introduces a technique of the normal four-wheel tractor equipped with exhaust gas controlling device and designs a computer safety monitor system.
论述了在普通四轮拖拉机上加装废气控制装置的技术，设计了一种相配套的计算机安全监测系统。
3
Thermal cleaning systems for exhaust gas from surface treatment equipment - Safety requirements.