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双子电刷 double split brush
双孔 diplopore
双孔定向耦合器 two-hole directional coupler
双孔构架 spectacle frame
双孔磁心 double-aperture core
双孔线圈 binocular coil
双孔花药 biporose anther
双孔透镜 double-aperture lens
双孔钻杆 dual-bore drill rod
双字 double word
双字母 biliteral
双字节 double byte
双字长累加 double-length accumulation
双字长运算 double-precision arithmetic
双季栽培制 double-crop system
双季稻 double-cropping paddy
双学位 double degree
双室炉 double chamber furnace
双室船闸 twin lock
双室调压室 double-chamber surge chamber
双宫丝 doupioni
双宫绸 doupioni
双宫茧 dupion
双宫茧丝 dupion
双宫茧缫丝 doupion reeling
双宾语 double-objects
双宿双飞 always keep each other's com...
双寄存器 pair register
双对偶 double dual
双对称 disymmetry
双对称色散 disymmetric dispersion
双对称面 disymmetric face
双导线 two-conductor line
双射 bijection
双射望远镜 catadioptric telescope
双射电源 double radio source
双尖镐 tubber
双层 double-deck
双层中空玻璃 double layer glass
双层公共汽车 double-deck bus
双层壁 cavity wall
双层客车 double decker coach
双层床 bunk bed
双层桥 double level bridge
双层火车 double-decker
双层玻璃 double-glazing
双层玻璃窗 double window
双层甲板船 two-decker
双层窗 a double window
双层胶合板 two-ply
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