steam emulsion number

例句：

1. 1.The steam emulsion is used to remove oil stains from clothes.
   蒸汽乳化液用于从衣物上去除油渍。
2. 2.The steam emulsion was developed to improve the cleaning efficiency of laundry machines.
   蒸汽乳化液被开发出来，以提升洗衣机的清洁效率。
3. 3. The steam emulsion was tested on a small group of volunteers before being widely used.
   在广泛使用之前，蒸汽乳化液先在一小群志愿者身上进行了测试。