double-s

double-seat valve

[机] 双座阀

double-seated ball valve

[化] 双座球阀

double-service rack

[化] 双效栈桥; 两用栈桥

double-sideband transmission

[计] 双边带传输

double-sideband transmitter

[电] 双旁带发射机

double-sided

adj. 含两方面的，有两面的; 两面派的，两面三刀的，三心二意的，伪善的，虚伪的

double-sided floppy disk

[电] 双面软磁盘

double-sided printed circuit board

[计] 双面印制电路板

double-slider crank chain

[机] 双滑件曲柄链, 双滑件曲柄机构

double-solvent refining

[机] 双溶剂精炼

double-space

v. (在打字机上)隔行打

double-spaced

vi. 隔行打
vt. 将（文件）隔行打
n. 两倍行距

double-spacing

vi. 隔行打
vt. 将（文件）隔行打
n. 两倍行距

double-spot tuning

[电] 双点调谐

double-squirrel cage induction motor

[电] 双笼感应电动机

double-standard

双重标准

double-standards

(double-standard 的复数) 双重标准

double-step write compensation

[计] 双阶跃写入补偿

double-stop

n. 双音