哪些是雨水篦子總是損壞的原因？

　　雨水篦子zicongshengchanchulaizhihou

，jibenshangdouyaoduitamenjinxingfangxiuchuli，dangran，zheyangdefangxiuchuliyeyouzhezijideyixiechulifangshi，bifanghuoxuzaizhenggeyushuibizishanghuiyouyixiereduxinhuozheshidianduxindechulifangshi
，tamenyeyouzhezijideyixieguifan，erqiezhenggechulidefangfahejishuxingdeyaoqiu，youzhezhijiexingdelianxi，yezhengyinweiruci，tamenbayushuibizizuoweiyizhongquanxindecailiao，rangxinchanpindedaoguangfandeyunyong。

　　yushuibizidexingnengxiangduilaishuoshijiaoweiyouyuede，xiangtongyetuxianletamendejiazhi
，yucitongshi

，zheyangdechanpinzaixuanzedejinchengbangbian，youzhezijidejingjixing，erqiezaigegebutongdefanchoubangbiandoukeyijinxingyunyong
，richangdeyunyongxiangtongyeshifeichangguangfande
，zuoweiquanxindecailiao
，zaiguowaixiangtongyeyouzhejishiniandekaizhanlishi，buguoxianzaideyushuibizi，tongshiyaozaiguoneiyehuichengxianxuduozhuangkuang，bifangguoneidexuduodangdizaiyunyongyushuibizideshifen，changchanghuichengxianyixiesunhuai，jiujingshishenmeyuanyinne

？

　　yushuibizizaishijiyunyongdejinchengbangbian

，huoxutamendechengzailiangdouyouyidingdebianhua，ruguoyaochangqiyunyongdehua，zhenggeyushuibiziwangwanghuoxuhuidaozhibenlaidejiegouchengzaicainengdebutong，namezaizhezhongzhuangkuangzhixia，huoxuwufamanzutamendechengzaili，jiuhuirangyushuibizichengxiansunhuai。

　　wendudebutongxiangtongyehuiyinqiyushuibizidesunhuai，huaxuewuzhizaiqinshidejinchengbangbianhuozheshichanshengfushideshifen，xiangtongyehuirangzhenggechanpindelingbujianzaodaoxueruo。