直径分段减小的套管柱  tapered casing string

小直径油管柱  macaroni string; macaroni tubing string

减小直径的  swedged

小直径油管  small diameter coiled tubing

小直径油管修井机  macaroni rig

高度减小的油柱  thinning oil leg

带切线直管段的三倍直径弯头  three-diameter ells with tangents

管柱直径  column diameter

林分直径分布规律  regularity of diameter structure of stands

小直径管  narrow tube; macaroni; small-diameter tube; small diameter tube

小直径管道  small diameter pipeline; small diameter pipe; Pipes with small diameters

小直径管供热系统  small bore heating system

小直径管坯  Small-sized billet for tube-making

油管直径  tubing diameter

小径油管  macaroni

无底柱小分段崩落采矿法  non-sill pillar little segment caving method

多油管柱的  multiple tubing string

（建）（使柱子等）的直径渐减  diminish; Diminished

4毫米直径的砂子  granule 2