1.
double-block and bleed assembly
双止回装置和放气设施
2.
auxiliary power unit bleed valve
辅助动力装置放气活门
3.
gaseous discharge lamp
(荧光)气体放电管
4.
gas discharge etching
气体放电蚀刻[法]
5.
air tank drain cock
气箱排放塞［开关］
6.
the bag containing the gas in a balloon.
气球中存放空气的包。
7.
Blow up balloons and then slowly let out the air by narrowing the opening of the balloons.
吹大气球，然后把气球口放开一点点，放出空气.
8.
d emission standard
空气质量和排放标准
9.
exhaust emission control system
排气排放物控制系统
10.
slagging gas producer
放液渣的气体发生炉
11.
Take fortune when it comes.
运气来了可别放过。
12.
pulsed-flash gas-discharge lamp
脉冲闪光气体放电灯
13.
dry powder type (gas expelled) extinguisher
干粉（气体排放式）灭火器
14.
The enemy gassed the room.
敌人给这房间施放毒气。
15.
open the window to admit air
打开窗放进新鲜空气
16.
Hirschback method
上部平巷排放沼气法
17.
Duplexer of gas discharge tube
气体放电管收发开关
18.
radioactive gas recovery system
放射性气体处理系统