查询词典 double-acting

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

double-faced box slide valve：双面滑阀,分配滑阀

两级蒸发锅炉 double-evaporation boiler | 双面滑阀,分配滑阀 double-faced box slide valve | 双面闸阀 double-faced sluice valve

double-track skip hoist：双料斗卷扬机

double-trace scope 双迹示波器 | double-track skip hoist 双料斗卷扬机 | double-transit oscillator 双渡越振荡器

double side band：双边带

double shut 双重关闭 | double side band 双边带 | Double Side Freight Tariff 双边费率本

double shear steel：双重剪切钢

double series || 二重级数 | double shear steel || 双重剪切钢 | double shielded winding || 双屏蔽绕组

double-end set screw wrench：双头紧定螺钉扳手

double-end scraper 双头刮刀 | double-end set screw wrench 双头紧定螺钉扳手 | double-end slotting cutter 双头键槽铣刀

double alternate set saw：双齿交错锯片

"double action press","双动压机" | "double alternate set saw","双齿交错锯片" | "double angle cutter","双角锐刀"

double roll rice polisher：双辊碾米机

double roll reversing cold-rolling mill 双辊可逆冷轧机 | double roll rice polisher 双辊碾米机 | double roll slag-crusher 双辊碎渣机

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.