biological age生物龄biologicaladj.生物的；生物学的Biological Warfare Defense生物战防御biological damage of trees生理损毁biological peristalsis bed生物蠕动床biological fluid mechanics[化] 生物流体力学biological material energy生物质能Biological control of weed生物防治biological firebreak belts生物防火林带biological photomicroscope摄影生物显微镜biological removal of odor生物除臭biological isotope effects生物学同位素效应