He laid the foundation of the science of bacteriology.他为细菌学科学奠定了基础.The history of anthrax is intimately associated with the history of bacteriology and infectious disease.炭疽病的历史与细菌学和传染病学的历史是密切相关的.The work on anthrax abru...
臭氧是一种非常活跃的氧气形态。Ozone is a highly reactive form of oxygen gas.臭氧由氧气和紫外线发生反应而产生。Ozone is produced by the reaction between oxygen and ultra-violet light.密封的飞机内很少需要补充氧气。Supplementary oxygen is rarely needed in pressurized ai...