| 单词 | biosafety level |
| 释义 | biosafety level (once / 11819311 pages) n WORD FAMILY biosafety level USAGE EXAMPLESHrv is a highly lethal but not very infective Biosafety Level 2 agent. Richard Preston, The Hot Zone(1994) That work’s being done in the most secure, biosafety level 4 labs. MSNBC(Oct 15, 2015) It will include a biosafety level 4 lab, meaning one designed to handle deadly and exotic pathogens for which no vaccines or treatments exist. Slate(Jun 16, 2015) n the level of safety from exposure to infectious agents; depends on work practices and safety equipment and facilities Hypo|Hyper biosafety level 1 exposure only to infectious agents that do not ordinarily cause human disease biosafety level 2exposure to infectious agents that can cause disease in humans but whose potential for transmission is limited biosafety level 3exposure to infectious agents that can be transmitted by the respiratory route and which can cause serious infection biosafety level 4exposure to exotic infectious agents that pose a high risk of life-threatening disease and can be transmitted as an aerosol and for which there is no vaccine or therapy grade, level, tier a relative position or degree of value in a graded group |
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