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
大口径长输管道
long-distance transmission pipeline with large dia
大口径超长钢管桩
the large-diameter and extra-long steel pipe pile
大口径抽水
Large-diameter well pumping
大口径低转速泵
pump with large-diameter and low speed
大口径非球面
Large aspheric surfaces
Large aspheric surface
large aspheric mirror
Large-aperture aspheric surface