在雨天开过车的人可能都有过这种体会：下雨时,雨水是成雨带一条一条分布的,所以在行驶时,雨量会不断变化,忽大忽小,时有时无。雨刷器太慢会刷不净雨水而遮挡视线,雨刷器频率太快也影响视线,这样就需要不断调整雨刷器的速度,否则对行车安全不利。而且风挡上面雨水少了会产生干刮的情况,产生噪音的同时,也容易磨花风挡玻璃和磨损雨刷片。 People who drive in rainy days may have had this experience: When it rains, the rain is distributed as a rain belt, so when it comes to driving, the rainfall will continue to change, suddenly big, sometimes small. Too slow wiper brush will not clean the rain and block the line of sight, wiper frequency too fast also affect the line of sight, so you need to constantly adjust the wiper speed, otherwise adverse to traffic safety. And windshield above the rain will produce dry scratch less noise, at the same time, it is also easy to wear the windshield and wear wipers.