查询词典 double-layered

double-thread hob：双头滚刀

double-thickness sheet glass 双厚窗玻璃 | double-thread hob 双头滚刀 | double-throw crank-shaft 双弯曲轴

double-throw disconecting switch：双投隔离开关

double-throw crankshaft 双臂曲轴 | double-throw disconecting switch 双投隔离开关 | double-throw switch 双投开关

double-U butt weld：双U形对接焊

double-J groove weld || 双J形槽焊 | double-U butt weld || 双U形对接焊 | double-U groove || 双面U形坡口

double cylinder rim drawback lock：双舌弹子门锁

double cylinder press 双滚筒印刷机 | double cylinder rim drawback lock 双舌弹子门锁 | double cylinder slip pump 双缸泥浆泵

double-sided drawing press：双边拉压机

double-sided diskette 双面软盘 | double-sided drawing press 双边拉压机 | double-sided floppy 双面软磁盘

double drift region avalanche diode：双漂移雪崩二极管

double base diode双基极二极管, 单结晶体管 | double drift region avalanche diode双漂移雪崩二极管 | double heatsink diode双重散热片二极管

(d)double drum dryer with spray feed：喷洒加料式双滚筒干燥器

(c)double drum dryer with splash feed飞溅布料式双滚筒干燥器 | (d)double drum dryer with spray feed喷洒加料式双滚筒干燥器 | (e)vacuum double drum dryer 双滚筒真空干燥器

double cage type mechanical drum washer：双笼式机械洗桶机

double cable winch 双索卷扬机 | double cage type mechanical drum washer 双笼式机械洗桶机 | double cage type motor 双鼠笼式电动机

double tariff electricity meter：二部电价制电度计,双价电度表

"double T steel ","H形钢,工字钢" | "double tariff electricity meter ","二部电价制电度计,双价电度表" | "double tariff meter ","二部电价制电度表"

double wedge airfoils：双楔翼型

double wave detection || 全波检波 | double wedge airfoils || 双楔翼型 | double wing spar || 双翼梁

McKenna：麦肯纳(姓氏)

officers n.政府官员, 军官, 警官, 船长vt.指挥 | mckenna 麦肯纳(姓氏) | disappointing adj.使人失望的, 令人失望的

rapid：激流

他们穿过很多美丽的峡谷,绕过无数大瀑布(cataract)、激流(rapid)和瀑布(waterfall). 带着仅有的两艘船,和几乎完全耗尽的给养,剩余的六个人终于到达了维尔京河(Virgin)的摩门教定居点. 这里,是他们一百天探险的终点.