1.
air to air system
空气 空气式空档统
2.
smell carried by the wind
（空气传送的）气味
3.
air producer gas
空气(发生器)煤气
4.
air break switch
空气开关空气断路开关
5.
air-to-air heat exchanger
空气-空气热交换器
6.
air circulation
空气循环,空气环流
7.
Olefin gas closely approximates air.
烯空气跟空气十分近似。
8.
Of, relating to, or having the constitution of air.
空气的空气的，有关空气的或由空气组成的
9.
air and outer space
空气空间和外层空间
10.
middle tank air
(容器中层的蒸气空气空间) 中槽空气
11.
Of, in, or caused by the air.
空气的属于空气的，在大气中的或由空气造成的
12.
The sky is clean and the air is so fresh.
天空晴朗，空气新鲜。
13.
combined compressed-air and vacuum brakes
空气-真空两用制动机
14.
Idle Air Control #3 Driver
空闲空气控制＃３驱动器
15.
The sky was blue and the air fresh and sweet.
天空湛蓝，空气清新宜人。
16.
The air is evacuated from the furnace.
从真空炉中抽出空气。
17.
The vacuum valve opens to admit air.
真空阀开启以补充空气。
18.
"Hot air is lighter than colder air," they said. "That is why hot air goes upwards.
他们说：“热空气比冷空气轻，因而热空气会向上升。