dustpann.簸箕dustn.灰尘；尘土；粉尘vt.去掉 ... 的灰尘；撒粉末于vi.除尘dust collecting sleeve吸尘袋dust-extraction hood除尘罩dust deposition fluxes沙尘沉降通量dust-disease of lung[医] 肺尘埃沉着病, 尘肺dust-free atmosphere无尘大气dust weather frequency沙尘天气发生频次dust-transport model沙尘输送模式dust suction apparatus吸尘装置； 吸尘器dust collecting system收尘系统dust collector cyclone旋风除尘器