Warning: file_put_contents(): Only 0 of 6596 bytes written, possibly out of free disk space in /www/wwwroot/ppbbbu/n94.cn/index.php on line 55 back crotch seam是什么意思，back crotch seam的翻译，back crotch seam音标、读音、用法和例句_94生活常识网有道词典
By means of mathematical analysis, the paper discusses how to determine the seam gradient of back trouser crotch according to types of figure. 本文结合人体体型，从适身型角度，利用数学方法分析探求后裆缝斜度的确定问题。