Warning: file_put_contents(): Only 0 of 4900 bytes written, possibly out of free disk space in /www/wwwroot/ppbbu/cp667.com/index.php on line 55 double-helix英英字典_double-helix剑桥英语解释_double-helix柯林斯英文解释_淳朴汉英词典
1. N the form of the molecular structure of DNA, consisting of two helical polynucleotide chains linked by hydrogen bonds and coiled around the same axis DNA结构中的双螺旋[biochem]