binary linkdouble-linked ringsdoubly-linked ring双链: double strand环: ring; hoop双链环状dna: double-stranded cyclic dna链环: chain link; chain iron双链: double strand◇双链绞结 elbow in haws; 双链聚合物 double-chain polymer; 双链霉素 streptoducin下载手机词典可随时随地查词查翻译