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| purification of water | |||
| water conditioning | |||
| treatment of water; water clarification | |||
| water purification Any of several processes in which undesirable impurities in water are removed or neutralized (任何清除或中和不需要的水中杂质的过程。) | |||
| water dressing; water purifying; water settling | |||
| water treatment | |||
| water purification (作用); water softening; water treatment (作用) | |||
| water purification | |||
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| water purification | |||
| 水净化: 262 phrases in 30 subjects |
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