| Source | Target | | 氧化钙 | calcium oxyde |
| 氧气瓶 | oxygen bottle |
| 氨 | ammonia |
| 氩气 | argon |
| 氮 | nitrogen |
| 氯丁橡胶 | neoprene rubber |
| 氯氟化碳 | chlorofluorocarbons |
| 氯氟烃 | chlorofluoro hydrocarbons |
| 水 | water |
| 水位 | water level |
| 水冷 | water-cooled |
| 水力测功计 | hydraulic dynamometer, water brake, water-operated dynamometer |
| 水动力的 | hydrodynamic |
| 水头 | head of water |
| 水套 | water jacket, water space |
| 水封 | water-tight |
| 水平对置发动机 | boxer engine, flat engine, horizontally opposed engine, opposed-cylinder engine |
| 水平面 | horizontal, level |
| 水泥 | cement, fixing agent |
| 水泵廊道 | pump gallery |
| 水泵盘根 | water-pump packing |
| 水泵轴承 | water-pump bearing |
| 水渠 | water channel, water passage |
| 水管 | water hose |
| 水膜 | water film |
| 水衰退 | water fading |
| 水陆两用车 | amphibian vehicle, amphibious vehicle |
| 永久磁铁 | permanent magnet |
| 汞 | mercury |
| 污染 | contamination |
| 污物 | dirt, garbage, refuse, trash |
| 汽油 | gas, gasoline, petrol |
| 汽油供油泵 | gasoline feed pump, gasoline lift pump, petrol feed pump, petrol lift pump |
| 汽油供油系统 | gasoline feed system, petrol feed system |
| 汽油分配泵 | gasoline-dispensing pump, gasoline pump, petrol-dispersing pump, petrol pump |
| 汽油加油口盖 | gasoline filler cap, petrol filler cap |
| 汽油压力 | gasoline pressure, petrol pressur |
| 汽油发动机 | gasoline engine, gas engine, petrol engine |
| 汽油喷射 | gasoline injection, petrol injection |
| 汽油喷射泵 | gasoline-injection pump, petrol-injection pump |
| 汽油喷射系统 | gasoline-injection system, petrol injection system |
| 汽油回油管路 | gasoline return line, petrol return line |
| 汽油气化 | fuel evaporation |
| 汽油油位 | gasoline level, petrol level |
| 汽油润滑 | petroil lubrication, total-loss lubrication, two-stroke mixture |
| 汽油添加剂 | gasoline additive, petrol additive |
| 汽油管路 | gasoline line, gasoline pipe, petrol line, petrol pipe |
| 汽油罐 | gas tank |
| 汽油运输船 | gasoline tanker, petrol tanker |
| 汽油锁阀 | gasoline lock-off valve, petrol lock-off valve |
| 汽缸 | gas cylinder |
| 汽缸壁 | cylinder wall |
| 汽缸套 | cylinder insert, cylinder liner, cylinder sleeve |
| 汽缸套表面 | cylinder bearing surface |
| 汽缸工作表面 | working surface of cylinder |
| 汽缸座 | cylinder base, cylinder foot |
| 汽缸排列 | arrangement of cylinders, cylinder arrangement |
| 汽缸盖衬垫 | cylinder-head gasket |
| 汽缸筒 | cylinder barrel, cylinder bore |
| 汽缸螺栓 | cylinder bolt, cylinder-head bolt, head bolt |
