大口径光学件
Large aperture optical components
大口径管材
large caliber winding pipe
large caliber pipe
large diameter pipe
大口径供热管道
large diameter heat supply pipeline
大口径高参数
large-diameter and high parameter
大口径钢管桩
big diameter steel pipe pile
大口径钢管
pipe
Steel Pipe with Large Caliber
large diameter steel pipeline
大口径肛管
Large-calibre transanal tube
大口径干涉仪
large-aperture interferometer
大口径非球面
Large aspheric surfaces
Large aspheric surface
large aspheric mirror
Large-aperture aspheric surface