Double J双J管doubleadj.双重的；成双的；两倍的v.翻一番；使 ... 加倍n.两倍；双份double seals双密封double match双重匹配doublehumpedadj.双峰的double primen.秒号double blind双盲double tunedadj.双调谐的double punch双穿孔doubler type双式doubledeckedadj.双层结构的double bogey超两击(各穴比规定击数多打两下)