【Weekly Topic】【HVAC Version 20170104】

2017-01-04View Original

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Participation reward: 2 Wealth. Correct reward: 9 Wealth. Fill in the blank: The particle size of dust can be expressed using ( ). Group quality percentage

Reply #22017-01-04

The average diameter of the dust particles or the length of their projected orientation

Reply #32017-01-04

By the mass percentage or volume percentage of the groups (grouped by dust particle size)

Reply #42017-01-04

The average diameter of the dust particles or the length of their projected orientation

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【Weekly Topic】【HVAC Version 20170104】

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