doubleword双字doubleadj.双重的；成双的；两倍的v.翻一番；使 ... 加倍n.两倍；双份double enzyme hydrolysis双酶水解double V leather packing双皮碗填密法double laryngeal strider双重性喉鸣double-blind procedure双盲程序double-deck air layers双层空气层风筒double-perforatod pipe双穿孔管Double difference Method双差分定位法double Fourier transform双重Fourier变换double knee presentation完全膝先露double-fuzzy structure双模糊结构