Warning: file_put_contents(/www/wwwroot/ppbbu/laei.cn/cache/043a488a0720b2e354a56bf8402f9763.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/laei.cn/index.php on line 58 conjugation line例句_conjugation line英汉例句_conjugation line双解例句_按摩法牛津词典
Based on the geometry characteristics of Bertrand surfaces, the complicated surface conjugation issue can be discussed with their directrix line. 在此基础上给出了准线应满足的基本条件、共轭曲面的诱导曲率、不干涉条件与准线曲率轴之间的关系等。