 |
| Chinese | English |
| 原子百万分率 | atomic parts per million |
| 当量百万分率 | equivalent parts per million |
| 百万分率体积= 0.0001 体积 ％ | parts per million by volume |
| 百万分率1 ppm = 0.0001% | parts per million |
|
| Chinese | English |
| 原子百万分率 | atomic parts per million |
| 当量百万分率 | equivalent parts per million |
| 百万分率体积= 0.0001 体积 ％ | parts per million by volume |
| 百万分率1 ppm = 0.0001% | parts per million |