1.
double-head arrow
双箭头(双头指针)
2.
bm=1.25d Double end studs bm=1.25d
GB/T898-1988双头螺柱
3.
bm=1.5d Double end studs bm=1.5d
GB/T899-1988双头螺柱
4.
bm=1d Double end studs--bm=1d
GB/T897-1988双头螺柱
5.
bm=2d Double end studs bm=2d
GB/T900-1988双头螺柱
6.
twin-head tandem arc-welding machine
双头串联电弧自焊机
7.
double-studded flange
双头螺栓连接的法兰
8.
double-screw bolt
螺柱，双头螺纹螺栓
9.
double end 15 degree angle wrench
双头15度斜口扳手
10.
double end circular saw flanks grinding
双头圆锯片侧磨齿机
11.
Ultimately a two-headed monster was produced.
最后产生了双头畸形。
12.
Fire extinguisher actuator head. Double head with connectors.
灭火器激励器头。有连接器的双头。
13.
High post double/high post double needle with roller feed sewing machine
高头车双针/高头车双针加轮送
14.
air-spaced double anastigmat
双分离对称消像散镜头
15.
twin-lens reflex 120 camera
双镜头反光120照相机
16.
He got to his knees. He bent his head.
他双膝跪下，低下了头。
17.
twin oblique photograph
双镜头倾斜航摄照片
18.
He sank his head in his hands.
他把头埋入双手之中。