In general, cleaning approach have been categorized by degree of cleaning capacity as preventative or restorative.
按清洗能力一般可将清洗方法分为预防性清洗和恢复性清洗。
The river side pollution will become more serious because of the slow down of river velocity, though the water quantity and self-cleaning capacity increase.
由于水体加大，水流减缓，水环境总体纳污能力增加，但岸边污染将趋严重。
"For every megawatt of solar panel capacity, you'll need a ton of NF3 for cleaning the equipment," Pilgrim says.
“太阳能板容量每增加一兆瓦，就需要一吨的三氟化氮来清洗设备。”皮尔格林说。
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