扩径 meaning in Chinese

hole enlargement

The affects of slowness changes in serious hole collapse interval are not ignored
所以，在扩径段双发双收声系记录的时差数据有时需要进行扩径校正。
The affects of slowness changes on hole diameter opposite a receiver could not be compensated completely
计算结果表明，双发双收声系对扩径影响的补偿不彻底。
The compensated ability varies with the difference of bed slowness and changes of hole diameter
随着地层时差的不同和扩径量的不同，双发双收声系的补偿能力也不同。
Aerospace series - shank nuts - installation holes , 60 swage , flanges - design standard ; german version en 3149 : 1996
航空航天系列.铆接螺母. 60度扩径安装孔法兰.设计标准
Study of the mechanical caliber enlargement process of longitudinally - welded pipe used for pipeline and the influence factors thereof
管线用直缝焊管机械扩径及其影响因素研究

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