dhr(dh,3,360,1,0.5,1,0.5)
//设置旋转角度为360度
dh(dh,"duration",1000)
//设置旋转一圈的时间为1秒
dh(dh, "repeat", -1)
//-1无限重复
us(2,"dh",dh)
//2为控件ID