查询词典 double-fault

double-reduction spur pinion：复式减速小正齿轮

double-reduction shaft ==> 复式减速轴 | double-reduction spur pinion ==> 复式减速小正齿轮 | double-reheat steam turbine ==> 中间再热式汽轮机

double-head spring needle knitting machine：汗绒布二用针织机

double-head rail 双头轨 | double-head spring needle knitting machine 汗绒布二用针织机 | double-head turning tool welded with carbide tip 硬质合金双头车刀

double span trussed roof structure：双跨屋架结构

double source ==> 双源 | double span trussed roof structure ==> 双跨屋架结构 | double span wire system ==> 双拉线式

double-face sluice valve：双面闸阀

double-evaporation boiler 两极蒸发锅炉 | double-face sluice valve 双面闸阀 | double-faced box slide valve 双面滑阀

Double Slip Switch：双交叉转辙器

Double Crossover 交叉横越线 | Double Slip Switch 双交叉转辙器 | Double Track 双轨

Double Slip Switch：双交叉转辙器(铁路)

双滑件机构 double slider machanism | 双交叉转辙器(铁路) double slip switch | 双火星塞点火 double spark plug ignition

Double Slip Switch：双动转辙器

double-pole switch 双刀开关; 双极开关 | double-slip switch 双动转辙器 | double-throw disconnecting switch 双投隔离开关

Double Slip Switch：复式交叉转辙器

"double-silk-covered wire ","双层丝包线" | "double-slip switch ","复式交叉转辙器" | "double-speed motor ","双速电动机"

double slide-wire potentiometer：双滑线电势计

double slide valve ==> 双滑阀 | double slide-wire potentiometer ==> 双滑线电势计 | double slider coupling ==> 十字头联轴节

double-faced box slide valve：双面滑阀

double-face sluice valve 双面闸阀 | double-faced box slide valve 双面滑阀 | double-faced pallet 双面托盘

mine-run coal：原煤

"mine resistance","通风阻力 ; 矿阻" | "mine-run coal","原煤" | "mine salting","矿石渗杂"

PA: Pennsylvania：美国宾夕法尼亚州州名

ancestry 祖先(集合称), 家系, 血统 | Pa. Pennsylvania 美国宾夕法尼亚州州名 | booster locomotive 辅助机车