1.
double-action pump
双动泵，双作用(活塞)泵
2.
double-acting double piston rod oil cylinder
双作用双活塞杆式油缸
3.
double-acting positive displacement compressor
双作用容积式压缩机
4.
double-acting single piston rod oil cylinder
双作用单活塞杆式油缸
5.
double action reciprocating pump
双作用活塞式往复泵
6.
balance vane pump
双作用卸荷式叶片油泵
7.
Energy-saving Study on a New-style Double-acting Vane Steering Pump;
新型双作用叶片式转向泵的节能研究
8.
dual-acting band brake
双向作用带式制动器
9.
Cup together
双手捧在一起作杯状，用双手托住
10.
The Bicrossed Products with Inner Action and Inner Coaction
由内作用、内余作用构造的双交叉积
11.
a mineral consisting of potassium magnesium double sulphate; used as a fertilizer.
一种矿物，由双钾双镁硫酸盐矿物组成，用作肥料。
12.
Two-mode Field Squeezing of SU (2) Coherent States Interacting with Two Coupled Atoms;
双原子与双模光场相互作用的光场压缩
13.
Application of Double Fans and Dual "Sanzhuan" Power Supply Loops at Heating Face
双风机“双三专”电源在掘进工作面的应用
14.
She was wearing a man's working boots.
她脚上穿着一双男用工作靴。
15.
having two possible(and contradictory)meanings or effects at the same time
有双重（矛盾的）含义或作用的
16.
The Effects of Semanteme's Psychological Functions in Bilingual Represenpation
语义的心理功能在双语表征中的作用
17.
The Role of Electric-field Induced Double-frequency Absorption in Two-photon Response
场致倍频吸收在双光子响应中的作用
18.
This pattern has progressive and restrictive dual functions.
这一模式具有进步与局限的双重作用。