小直径油管更有利于增加举液高度。
The tubing with small diameter is more favorable for increasing the fluid lift.
魏荆输油管道由于采用了加剂低温输送，致使管道管壁结蜡严重，当量管径交小。
Weigang — Jingmen oil pipeline, with pour depressant added and transportation at lower temperature, arose wax deposit, which reduced the equivalent diameter.
针对海底石油管道超声检测信号的噪声消除问题，本文研究了基于小波分析的噪声消除方法。
Aimed at noise cancelling cut for ultrasonic inspecting signal of seabed oil pipeline flaw, a kind of noise cancellation method based on wavelet analysis is studied.
针对海底石油管道超声检测信号的噪声消除问题，本文研究了基于小波分析的噪声消除方法。
Aimed at noise cancelling cut for ultrasonic inspecting signal of seabed oil pipeline flaw, a kind of noise cancellation method based on wavelet analysis is studied.
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