yánjiūrényuán / yòng / yíqì / cèliáng / shìnèi / kōngqì / zhōng / de / fúzhì / nóngdù / yǐ / pínggū / tōngfēng / xiàoguǒ

研究人员用仪器测量室内空气中的浮质浓度，以评估通风效果。

Researchers used instruments to measure the aerosol concentration in the indoor air to evaluate the effectiveness of ventilation.