| airfall tuff | 空降凝灰岩 |
| annual rainfall | 年降雨量 |
| areal mean rainfall | 地区平均雨量 |
| average yearly rainfall | 平均年降雨量 |
| backfall | 山坡 |
| boatfall | 短艇索 |
| cat fall | 吊锚索 |
| direct detection pitfalls | 直接检测陷阱 |
| downfall | 落下；降下；垮台 |
| dustfall | 降尘 |
| earth fall | 土塌 |
| fall head | 落差 |
| fall in | 坍塌 |
| fall of ground | 地层陷落 |
| fall of potential | 电位降 |
| fall out of step | 失步 |
| fall peneplain | 准平原风化带 |
| fall rate | 降落速率 |
| fall time | 衰变时间 |
| fall velocity | 沉降速度 |
| fall | 通索 |
| fall-of-potential method | 电位降法 |
| fall-off curve | 压降曲线 |
| fall-off test | 压降试井 |
| fall-off | 衰减 |
| fall-out radioactive materials | 放射性沉积物 |
| fallacy | 谬误 |
| fallaway | 分开 |
| fallback | 降落原地；后退 |
| fallen-in | 坍塌 |
| falling ball viscosimeter | 落球粘度计 |
| falling body absolute gravimeter | 落体式绝对重力仪 |
| falling body | 落体 |
| falling dart test | 落镖试验 |
| falling edge | 下降沿 |
| falling film diluter | 降膜稀释器 |
| falling film evaporator | 降膜蒸发器 |
| falling head permeameter | 变水头渗透率仪 |
| falling home | 内倾 |
| falling needle viscometer | 落针粘度计 |
| falling rock formation | 塌落岩层 |
| falling sand abrasion test | 落砂磨损试验 |
| falling sand stream | 落砂流 |
| falling weather | 雨季 |
| falling weight impact test | 落锤冲击试验 |
| falling | 落下 |
| falling-ball impact test | 落球冲击试验 |
| falling-pendulum apparatus | 落锤式织物撕破强力测试仪 |
| falling-sphere damage test | 落球法损伤测定 |
| falling-sphere viscometer | 落球粘度计 |
| fallout | 放射性尘降 |
| free fall | 顿钻钻井法；顿钻钻具下击；自由下落 |
| free falling body | 自由落体 |
| free falling dart test | 自由落镖试验 |
| free-fall type gravimeter | 自由落体型重力仪 |
| freely falling body | 自由落体 |
| Glen Falls Formation | 格伦福尔斯组 |
| gravel fall rate | 砾石沉降速率 |
| gravel fallout | 砾石滑脱 |
| infall | 下降 |
| infallible | 可靠的事物；没有错误的；绝对可靠的；必然的 |
| landfall buoy | 接近陆地浮标 |
| landfall | 降落 |
| liquid fallback | 液体下落量 |
| maximum rainfall | 最大降雨量 |
| meteorite fall | 陨石雨 |
| moderate rainfall | 适度降雨量 |
| outfall ditch | 排水沟 |
| outfall fan | 冲积扇 |
| outfall | 排出；河口；袭击；排出口 |
| overfall | 溢流 |
| pitfall | 陷井 |
| pressure fall | 压力降 |
| pressure fall-off curve | 压降曲线 |
| pressure fall-off test | 压降测试 |
| production shortfall | 产量下降 |
| rainfall amount | 降雨量 |
| rainfall intensity | 降雨强度 |
| rainfall rate | 降雨速度 |
| rainfall | 雨量；降雨 |
| rate of fall | 沉降速率 |
| rate of fall-off | 衰减率 |
| relative fall | 相对落差；倾斜 |
| retrograde fall out | 反凝析 |
| rod fall | 抽油杆掉落 |
| sand falling out | 砂粒沉降 |
| sand fallout | 砂子沉出 |
| shortfall | 亏空 |
| snowfall | 降雪 |
| spring-and-fall grade gasoline | 春秋级汽油 |
| tearing strength by falling pendulum apparatus | 落锤法撕破强力试验 |
| total rainfall per year | 年总降雨量 |
| two-rate falloff test | 两级流量压降试井 |
| water fall | 瀑布 |
| windfall loss | 意外损失 |
| windfall profit tax | 暴利税 |
| windfall profit | 意外利润；暴利 |
| windfall tax | 暴利税 |