double-thread hob：雙頭滾刀

double-thickness sheet glass 雙厚窗玻璃 | double-thread hob 雙頭滾刀 | double-throw crank-shaft 雙彎曲軸

double-throw disconecting switch：雙投隔離開(kāi)關(guān)

double-throw crankshaft 雙臂曲軸 | double-throw disconecting switch 雙投隔離開(kāi)關(guān) | double-throw switch 雙投開(kāi)關(guān)

double-U butt weld：雙U形對(duì)接焊

double-J groove weld || 雙J形槽焊 | double-U butt weld || 雙U形對(duì)接焊 | double-U groove || 雙面U形坡口

double cylinder rim drawback lock：雙舌彈子門(mén)鎖

double cylinder press 雙滾筒印刷機(jī) | double cylinder rim drawback lock 雙舌彈子門(mén)鎖 | double cylinder slip pump 雙缸泥漿泵

double-sided drawing press：雙邊拉壓機(jī)

double-sided diskette 雙面軟盤(pán) | double-sided drawing press 雙邊拉壓機(jī) | double-sided floppy 雙面軟磁盤(pán)

double drift region avalanche diode：雙漂移雪崩二極管

double base diode雙基極二極管, 單結(jié)晶體管 | double drift region avalanche diode雙漂移雪崩二極管 | double heatsink diode雙重散熱片二極管

(d)double drum dryer with spray feed：噴灑加料式雙滾筒干燥器

(c)double drum dryer with splash feed飛濺布料式雙滾筒干燥器 | (d)double drum dryer with spray feed噴灑加料式雙滾筒干燥器 | (e)vacuum double drum dryer 雙滾筒真空干燥器

double cage type mechanical drum washer：雙籠式機(jī)械洗桶機(jī)

double cable winch 雙索卷?yè)P(yáng)機(jī) | double cage type mechanical drum washer 雙籠式機(jī)械洗桶機(jī) | double cage type motor 雙鼠籠式電動(dòng)機(jī)

double tariff electricity meter：二部電價(jià)制電度計(jì),雙價(jià)電度表

"double T steel ","H形鋼,工字鋼" | "double tariff electricity meter ","二部電價(jià)制電度計(jì),雙價(jià)電度表" | "double tariff meter ","二部電價(jià)制電度表"

double wedge airfoils：雙楔翼型

double wave detection || 全波檢波 | double wedge airfoils || 雙楔翼型 | double wing spar || 雙翼梁