【运输】双座位的

注：SCCV关闭方式和双阀座差压机构安装在同一单元内，寿命长久。

double-side hacksaw blade

straight-side 4-point double-action drawing press

double standard

Double-head counting tablet machine

double-pole double-throw

double-ended grinding machine【机】

double precision exponent part【计】

Lung transplantation (bilateral sequential or en bloc double lung)