查询词典 answer a double purpose

double refraction：重折射,双折射

double pearl 双子珍 亦称Twin pearl | double refraction 重折射,双折射 | double rose 双玫瑰花型

double refraction：双(重)折射,二次折射,双折射

double refined iron | 重炼铁,二重精炼铁 | double refraction | 双(重)折射,二次折射,双折射 | double rocker mechanism | 双曲柄机构

double refraction：二次折射,双折射

"double reaction theory ","双反应理论" | "double refraction ","二次折射,双折射" | "double resonance ","双共振,双谐振"

double root：重根

double ratio 交比 | double root 重根 | double sequence 二重数列

double root：双根音

"双簧乐器","Double reed instrument" | "双根音","Double root" | "双根音和弦","Double root chord"

Double root chord：双根音和弦

"双根音","Double root" | "双根音和弦","Double root chord" | "双震音","Double shake"

double salt：双盐

双折射 double refraction | 双重山脊 double ridges | 双盐 double salt

double salt water distilling plant：两级串联造水装置

double safety valve 双联安全阀 | double salt water distilling plant 两级串联造水装置 | double salt 复盐

calcium pantothenate,calcium chloride double salt：泛酸钙、氯化钙复盐

calcium pantothenate,calcium chloride double salt泛酸钙、氯化钙复盐 | conjugated double bond共轭双键 | double acting双作用;双动(式)

double manure salt：硫酸钾镁盐

double male and female (DMF) 双凹凸式密封面 | double manure salt 硫酸钾镁盐 | double mechanical end face seal 双端面密封

local minimum energy：局部极小能量

local mode 局部模式 | local minimum energy 局部极小能量 | local equilibrium 局部平衡

to take a picture：拍照

camera照相机 | to take a picture拍照 | film胶卷