double PID双PID
doubleadj.双重的;成双的;两倍的v.翻一番;使 ... 加倍n.两倍;双份
double body bearing boat双体承压舟
double-helix structure二重螺旋结构
double-sided polishing双面抛光
double acting compressor双动压缩机,双作用压缩机,双动式压缩机
double diameter cylinder双径气缸
double-walled bell jar双层烧结钟罩
double impression method锤击布氏硬度测定法
Double layer interaction双电层相互作用
double-dense recording双密度记录
Double idle state method双怠速法