储粮测虫器密西西比大学的工程师们发明了一种灵敏度极高的小型听诊器，能用来侦探到潜伏在粮食中极小的幼卵。在听诊器前端还装有一个灵敏度极高的显微镜，能观察到害虫的活动情况，害虫的两种行动可监听到：当它们蠕动或寻找食物时，发出的摩擦声；当它们吃食时发出的啃... Food Insect Tweezers Engineers at the University of Mississippi have devised a highly sensitive small stethoscope that can be used to detect tiny young eggs lurking in food. A highly sensitive microscope is attached to the front of the stethoscope to observe pest activity. Two types of pest action can be heard: the frictional sound that emanates when they crawl or look for food, the nibbling when they eat ...