off-set die head
直角机头(压出机)
Influence of structural parameters of T die to the flow balance
直角机头流道结构参数对流动平衡的影响
sweep optical square
平面扫描仪;扫描式光学直角头;扫描直角转光器
the ratio of the focal length to the diameter of a (camera) lens system.
相机镜头直径焦距比。
to point the camera straight up.
将摄影机镜头朝上直立
An old man was fiddling away at the street corner.
有个老头一直在街角拉小提琴。
Straight thread elbow--Body
GB/T3738.2-1983卡套式端直角接头体
Flared type tube fittings--Union elbow--Body
GB/T5630.2-1985扩口式直角管接头体
Flared type tube fittings--Union elbow--Assembly
GB/T5630.1-1985扩口式直角管接头
Flared type tube fittings--Swivel elbow--Assembly
GB/T5632.1-1985扩口式组合直角管接头
Flared type tube fittings--Bulkhead union elbow--Assembly
GB/T5644.1-1985扩口式隔壁直角管接头
Flared type tube fittings--Swivel elbow--Body
GB/T5632.2-1985扩口式组合直角管接头体
Flared type tube fittings--Bulkhead union elbow--Body
GB/T5644.2-1985扩口式隔壁直角管接头体
Flared type tube fittings--Male elbow--Assembly
GB/T5629.1-1985扩口式锥螺纹直角管接头
Flared type tube fittings--Male elbow--Body
GB/T5629.2-1985扩口式锥螺纹直角管接头体
Union elbow--Body
GB/T3740.2-1983卡套式直角接头体
Straight thread elbow--Assembly
GB/T3738.1-1983卡套式端直角管接头
Union elbow--Assembly
GB/T3740.1-1983卡套式直角管接头