1.
auxiliary power unit bleed valve
辅助动力装置放气活门
2.
fuel jettison shutoff valve
紧急放油系统断流活门
3.
fuel pressurizing and dump valve
燃料加压和排放活门
4.
This activity is called Open House.
这一活动叫做“开放门户”。
5.
Install the valve locks and release the tool.
安装气门锁，放开工具。
6.
intake valve deposit control additive
进气活门抗沉积添加剂
7.
Always replace the cap (where used) after checking air pressure or inflating a tire
检查气压或充气后,应该把轮胎气门盖放回原处。
8.
blowing the drip
打开集液器阀门让天然气喷放
9.
The mattress should be stored flat and with the valve open until it is to be packed for a trip.
气垫储存的时候要放平，阀门打开，知道充气完毕。
10.
"As the piston reaches BDC again, the exhaust valve opens. Now, as the piston moves up on the exhaust stroke, it forces the Burned gases out of the cylinder through the exhaust-valve port."
当活塞再一次到达下止点时,排气门打开。同时,活塞向上移动,把废气经排气门排出气缸。
11.
"On the intake stroke, the intake valve has opened, the piston is moving downward, and a mixture of air and vaporized gasoline is entering the cylinder through the valve port."
"在进气行程中,进气门打开,活塞向下移动,可燃混合气通过进气门进入气缸。"
12.
Many factories and commercial activities produce air-borne emissions.
很多工厂和商业活动排放废气。
13.
not self-propelled railway car specially designed for carrying radioactive materials
非自动推进专门运送放射活性物质的铁道车
14.
Book Talk” events are open for free.
沙龙”均为开放性的免费活动，不收取门票。
15.
Development and Study of 4-Cylinder 4-Valve Diesel Engine Reached Euro Ⅱ Emission Standard
四缸四气门排放达欧Ⅱ柴油机的开发研究
16.
Natural Emissions of Acid Forming Compounds into Atmosphere in Xiamen Area
厦门地区大气中致酸物质的天然源排放研究
17.
Dynamic investigation on hypersonic sidewall compression inlets with cowl valve during the process of transition
带唇口封气活门的高超侧压进气道过渡态工况气动性能
18.
After a few moments Clemenza rolled the window down to let out the stink.
过了几分钟，克莱门扎把窗子放下来，想把里面的臭气放出去。