论文部分内容阅读
第一次世界大战期间,科学家发明了利用超声波的回波侦察潜艇的“声纳”装置。但是此后不久,人们就发现,在这之前很早很早,蝙蝠就已经是应用“天然声纳”系统的能手了。人们为了在水下隐蔽航行,制造了潜艇。潜艇采用浮箱交替充水和排水的方法实现了自由沉浮,既可在水下航行,也可在水面上航行。但是后来人们发现,鱼类的起浮系统——充气的鱼鳔比潜艇的浮箱更巧妙。螳螂在二十分之一秒钟内,就能辨明从它面前飞掠而过的昆虫的方向、速度和距离,一下子就能把小虫捕获,这是上吨重的火炮跟踪系统都比不上的。……神奇的生物界,充满创新秘密的生物界!
During World War I, scientists invented “sonar” devices that use ultrasonic echo to reconnoitre submarines. Shortly thereafter, however, it was discovered that very early in the morning, the bat was already a master of the “natural sonar” system. Submarines were built to hide the sails underwater. The submarine floats freely and floats by means of a floating tank, which can sail both underwater and on the surface of the water. However, it was later discovered that the flotation system of fish - the inflatable fish 鳔 is more subtle than the submarine's pontoon. Mantis within one-twentieths of a second, you can identify in front of it flying past the direction of insects, speed and distance, the bug can be captured at once, this is a heavy artillery tracking system than Not on the list ... ... magical biological world, full of innovative secrets of the biological world!