double tube single swivel barrel  双管单动岩芯管

double tube double tube-plate heat exchanger  双管双管板换热器

asymmetric double tube  非对称双管

Closely spaced bias double-tube tunnel  小净距偏压隧道

coiled double-tube heat exchanger  蛇形管换热器

Double Barrel  复式岩心管; 双管枪

double barrel carburetor  双筒汽化器

double barrel colostomy  憩室

double barrel electric hoist  双筒电动卷扬机

Double barrel graft technique  平行折叠技术

double barrel midship pump  双筒船中部抽水泵

double barrel panels  双管板

double barrel pump  双泵筒; 双筒泵

double barrel stirred up  双管正激

double double iron  八叠板

double tube  双路管; 双层胶管; 双套管; 双管

double tube catheter  双腔导管

Double Tube Core Barrel  复式岩心管

double tube core barrel sampler  双重岩芯管取样器; 回转取样器