线段射线直线之间的联系_线段射线直线之间的联系
ˋ▽ˊ
+▽+
≥ω≤
window.onload = function () {
document.getElementById("mainFrame").src= "http://batit.aliyun.com/alww.html?id=00000000003727666140";
}
∩^∩
+▂+
(^人^)
ˋ▽ˊ
+▽+
≥ω≤
window.onload = function () {
document.getElementById("mainFrame").src= "http://batit.aliyun.com/alww.html?id=00000000003727666140";
}
∩^∩
+▂+
(^人^)