小口径管
small-caliber tube
small diameter tube
pipeline of small diameter
子孔径合成成像
synthetic subaperture imaging
常温自硬性合成树脂
cold-hardening synthetic resin
光敏树脂合成
Synthesis of photosensitive resins
合成树脂岔枕
synthetic epoxy switch sleeper
合成树脂灌装机
synthetic resin filling-packaging machine
合成树脂及塑料
China Synthetic Resin and Plastics