单词	powder rocket engine
释义	powder rocket engine 火药火箭发动机
随便看	ultramicroscopic granule ultramicroscopic granules ultramicroscopic method ultramicroscopic microbe ultramicroscopic microorganism ultramicroscopic morphology ultramicroscopic observation ultramicroscopic organism ultramicroscopic organisms ultramicroscopic particle ultramicroscopic sampling ultramicroscopic structure ultra-microscopic structure ultra-microscopic structure of tumor ultramicroscopic view ultramicroscopic virus ultramicroscopy ultra microscopy ultramicrosensor ultramicrosize griseofulvin Ultramicro-soft acidification water ultramicrosome ultramicrospectropho ultramicrospectrophotometer ultramicrospec-trophotometer