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| 惊人的进展; 关键问题的解决 | |||
| 泄露点 | |||
| 贯穿点 | |||
| 临界〔转折，突破，穿透〕点; 离子交换漏过点 | |||
| 临界点; 转折点; 漏过点; 穿透点 | |||
| 贯通点 | |||
| 临界转折点; 突破点 | |||
| breakthrough point: 4 phrases in 3 subjects |
| Chemistry | 1 |
| China | 2 |
| Technology | 1 |
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