Dual Channel and Dual Closed-loop  双通道双闭环

dual in and dual out coal mill  双进双出磨煤机

dual light source and dual output  双光源双输出

dual part of dual quantity  双量之双部

dual peak dual wavelength method  系数补偿法

dual- phase dual- storage pseudo- parallel  双拍双存储伪并行

dual qualitative and dual quantitative similarity method  双定性双定量相似度法

Dual ring dual direction  双环双向

Dual tower and dual column  双塔双柱

Dual-bus Dual-subsection  双母双分段

Dual-channel and dual-electrode electrochemical detection  双通道-双工作电极电化学检测

Dual-column-dual-detector  双柱双检测器

dual-input and dual-output  双输入双输出

dual-mode dual-standby  双模双待

Dual-path-dual-difference  双路双差分

dual-phase dual-storage pseudo- parallel  双拍双存储伪并行

dual-phase dual-storage pseudo-parallel  双拍双存储伪并行

dual-rib dual-beam steel band  双筋双梁钢带

dual-source and dual-output  双输入双输出