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咬人的蚊子是将要产卵的雌蚊,而它们具有避开雄蚊的特点。如果发明一种能发出同雄蚊的羽音波长相同的声波振荡器,则就可免遭蚊子叮咬。根据这一原理,现国外已制成几种袖珍电子驱蚊器。如日本制成的小型驱蚊器象一支钢笔,可放入衣服口袋中。它使用一节小型电池可连续使用一年。驱蚊距离2.3米,仅供一人使用,在原始森林中进行试验效果良好;还有一种盒式电子驱蚊器,也有同样效果(如图)。
Biting mosquitoes are the female mosquitoes to lay eggs, and they have the characteristics of avoiding male mosquitoes. A mosquito bite can be avoided if a sonic wave oscillator of the same wavelength as the plume of the male mosquito is emanated. According to this principle, several pocket electronic mosquito repeaters have now been made abroad. For example, a small mosquito repellent made in Japan resembles a pen and can be placed in a garment pocket. It uses a small battery can be used continuously for one year. Mosquito repellent distance of 2.3 meters, only for one person, in the virgin forest test results are good; there is a box-type electronic insect repellent, also have the same effect (pictured).