| 序号 | 英文 | 音标 | 词性 | 中文 |
| | air reluctance | | | 空气磁阻 |
| | air removing roll | | | 冷硬合金铸铁轧辊 |
| | air reservoir | | | 空气存贮器, 储气缸, 风缸, 储气器 |
| | air reservoir carrier | | | 储气桶架 |
| | air resistor | | | 空气调节器 |
| | air resources | | | 空气资源 |
| | air reversing valve | | | 空气换向阀 |
| | air rifle | | n. | 气枪 |
| | air ring | | | 环形空气囊 |
| | air risen spring lowered type pantogrpah | | | 空气提升弹簧降下式集电弓架 |
| | air risks | | | 空运险(外贸) |
| | air riveter | | | 风动铆钉机 |
| | air rock drill | | | 气动岩石钻 |
| | air roll | | | 压纸辊 |
| | air roll coater | | | 气刀辊涂机 |
| | air route | | | 航线 |
| | air route surveillance radar | | | 航线监视雷达 |
| | air route traffic control area | | | 空中交通控制区 |
| | air sac | | | [地质]气孔 |
| | air sample | | | 空气样品 |
| | air sampling | | | 空气取样 |
| | air sampling network | | | 空气取样网 |
| | air sand blower | | | 吹砂器 |
| | air sander | | | 自动打磨机 |
| | air scattering | | | 空气散射 |
| | air scoop | | | 导气罩, 进气口 |
| | air scout | | | 航空侦察机 |
| | air screen | | | 空气过滤网[筛] |
| | air search radar | | | 防空(情报)雷达 |
| | air seasoning | | | 风干 |
| | air seasoning condition | | | 气干状态 |
| | air separation | | | 风选 |
| | air separator | | | 除气设备 |
| | air service | | n. | 空军, 空中勤务 |
| | air set | | | 自然硬化 |
| | air set core | | | 自硬芯 |
| | air set pipe | | | 空气冷凝管 |
| | air setting | | | 空气凝固(法) |
| | air setting binder | | | 自凝粘结剂 |
| | air setting mortar | | | 气固性耐火灰浆 |
| | air setting refractory mortar | | | 气凝性耐火砂浆 |
| | air sextant | | | 航空六分仪 |
| | air shaft | | n. | 通风井 |
| | air shear | | | 风动剪断机 |
| | air shed | | | 空气(污染)区域 |
| | air shooting | | | 空中爆炸(空中激发产生地震波) |
| | air shot blast machine | | | 喷丸清理机 |
| | air shower | | | 空气吹淋室 |
| | air shrinkage | | | (在)空气(中)收缩 |
| | air shutter | | | 关气机, 调风门, 空气阀, 阻汽器 |
| | air shutter lever | | | 关气杆 |
| | air shutter shaft | | | 阻风器轴 |
| | air sickness | | | 航空病, 晕机 |
| | air sifter | | | 气筛, 气流分离器 |
| | air signal reducing valve | | | 空气信号减压阀 |
| | air silencer | | | 空气减声[消音]器 |
| | air silk | | | 空心丝 |
| | air sink | | | 气穴 |
| | air sinker | | | 风动钻孔器, 下向风动凿岩机, 向下打眼的风动凿岩机 |
| | air siren | | | 气笛 |
| | air slaking | | | 潮解, 风化 |
| | air sleeve | | | 风向袋, (圆锥形)风标 |
| | air slide | | | 气动滑板[滑阀, 滑道, 传送机] |
| | air slide valve | | | 空气分配阀 |
| | air sluice | | | 风闸门, 排气管, 空气室 |
| | air snap gauge | | | 气动外径量规 |
| | air space | | | 空(心)处 |
| | air space heater | | | 空间加热器 |
| | air space porosity | | | 空间孔隙度 |
| | air spaced coil | | | 大绕距电感线圈， 非密绕空心线圈 |
| | air speed | | n. | 空速 |
| | air speed assembly | | | 空速测量组件 |
| | air speed calibration card | | | 空速矫正卡, 空速矫正表 |
| | air speed computer | | | 空速计算机 |
| | air speed data | | | 风速数据 |
| | air speed static tube | | | 空速静压管 |
| | air sphere | | | 气圈, 气界 |
| | air split | | | [采矿]风流分支 |
| | air spout | | | (风扇式喷雾器的)喷嘴 |
| | air spray | | | 空气喷涂 |
| | air spray attack | | | 撒毒空袭 |
| | air spray finishing | | | 空气喷涂法 |
| | air sprayer pistol | | | (压缩)空气喷射器, 喷枪 |
| | air spreader | | | 空中(飞行)喷雾器 |
| | air spring | | n. | (像弹簧一样起减震作用的)气垫 |
| | air spun milling | | | 谷物的旋风粉碎 |
| | air stack | | | [航空]空中堆旋 |
| | air station | | n. | 飞机场, 航空站 |
| | air sterilization | | | 空气消毒 |
| | air storage chamber | | | (在汽缸头或活塞上的)辅助空气室, 储(空)气室 |
| | air storage tank | | | 储气罐 |
| | air strainer | | | 空气粗滤器[过滤器, 滤尘器], 滤气器 |
| | air straining check valve | | | 空气滤尘止回阀 |
| | air stream contamination | | | 气流污染 |
| | air stream mechanism | | | 气流机制 |
| | air strike | | | 空中出击, 空袭 |
| | air strip | | | 简易跑道, 着陆带 |
| | air stripping | | | 汽提 |
| | air stuffer | | | 气压式灌肠机, 气动填充机 |
| | air suction | | | 抽气 |
| | air suction casing | | | 吸气壳 |