1) reducing nozzle
变径段
2) cone-shaped variant section
锥体变径段
1.
Remedy and analysis of welding crack for cone-shaped variant section of thick wall pressure vessel on Q345·C;
Q345·C厚壁压力容器锥体变径段焊接裂纹分析及返修
3) Reducer sections,rules for
变径段，规程
4) concentric reducer section
同轴变径段
5) countercurved reducer
反向曲线变径段
6) altered diameter
变径
1.
Since the wellbore of small casing well has significant altered diameter,which makes isolation and blocking condition happen easily during running down the tool.
小套管井井身存在显著的变径,在工具下入过程中,极易发生阻隔现象,因此设计了配套的弹簧片导入装置。
补充资料：径径
1.不停貌。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条