一到夏日,讨厌的蚊子也随之而来。市场上防蚊、杀蚊、驱蚊的商品五花八门,什么杀蚊药、驱蚊器、电蚊拍等等,其中最管用的还要算——蚊帐。但是蚊帐用起来很不方便,每天又要放又要收,出入不方便,要是掖不好,蚊子还是能钻进去。我们知道激光是一种具有很强的方向性的光,我设... As soon as summer comes, hated mosquitoes will follow. Mosquito on the market, mosquito repellent, mosquito repellent variety of goods, what mosquito drugs, mosquito repellent, mosquito swatter and so on, the most useful of which have to count - mosquito net. However, the use of mosquito nets is very inconvenient to use, but also have to put another day to accept income, inconvenient access, if the tuck is not good, mosquitoes can still get in. We know that the laser is a kind of light with a strong direction, I set ...