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英德
有道
百度
谷歌
图片
维基
百科
double skip
双翻斗
double skip
double slag process
double sleeper joint
double sleeve valve
double slice
double slide copying ...
double slide valve
double slide-wire pot...
double slider crank c...
double slip switch
double slit
double slit diffraction
double sloping bed
double slug tuner
double small
double smoothing
double socket
double solvent extrac...
double solvents
double somersault
double sound source
double source
double space
double space key
double spade hand
double span trussed r...
double span wire system
double spanner
double spearhead
double specification ...
double spectroheliograph
double spectroprojector
double speed
double speed gear
double speed pulley
double spindle automa...
double spine saw
double spiral
double spiral gear
double spiral staircase
double spiral turbine
double splayed coping
double spline
double split brush
double split flow
double splitter
double spread
double spreading
double spring
double spring bottom ...
double spur grade
double square
double squirrel-cage ...
double squirrel-cage ...
double squirrel-cage ...
double squirrelcage m...
double stage ammonia ...
double stage compressor
double stage digester
double stage nitriding
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中国词汇量
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