单词	persistent substance
释义	persistent substance 持久性物质
随便看	high-speed shot high speed shutter high-speed shutter high speed signal high-speed signal high speed signal control equipment High-Speed Signal Control Equipment high speed signal processing High-speed signal processing high speed signal sampling high speed sign machine high-speed silicon high speed simulation high-speed simulation High speed Single-Chip computer high-speed single hull high speed single line controller high speed skip high-speed skip high speed slot-puncher high speed slow-scanning oscillograph high speed small copy milling machine high-speed smoothness high-speed solar wind high speed sole attaching press machine