Warning: file_put_contents(/www/wwwroot/ppbbu/28094.com/cache/4a58f5d9739c14ce48a58c1e57cb73c0.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/28094.com/index.php on line 55 quadrilaterals例句_quadrilaterals英汉例句_quadrilaterals双解例句_贰靶汉英词典
According to the principles of infinitesimal calculus,a new method on how to ratiocinate the arbitrary quadrilaterals area was put forward. 利用微積分原理給出任意四邊形麪積公式推証的一種新方法。