大非球面度镜面
deep off-axis aspherical mirror
大口径球铁管
Ductile Iron Pipe with Large Diameter
Big-diameter ductile iron pipes
平面非球面透射校正镜
plano-aspheric transmitting corrector
长距离大口径PCCP输水
long-distance and super-large diameter PCCP pipeli
大口径、长焦距平行光管
large-aperture and long-focus collimator
大口径3PE防腐
big caliber piping 3PE antisepsis
大口径KDP晶体
large-aperture KDP crystal
大口径X70弯管
large-diameter X70 bend pipes
大口径波纹管料
large diameter corrugated pipe feedstock
大口径薄壁管
thin-walled tube with large diameter
large diameter and thin-walled tube
Tube with Large Diameter and Thin Wall
大口径步兵自动武器
large caliber infantry automatic weapons