Warning: file_put_contents(): Only 0 of 6344 bytes written, possibly out of free disk space in /home/www/wwwroot/zidian/201990.com/index.php on line 55 quadrilaterals是什么意思，quadrilaterals的翻译，quadrilaterals音标、读音、用法和例句_耀久九英英词典
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。