crescent scour mark

基本解释新月形冲蚀痕

网络释义

1)crescent scour mark,新月形冲蚀痕2)crescent mark,新月形痕3)washover crescent,新月形波痕4)current crescent,新月形水流痕5)fatigue crescent,新月状疲劳痕6)crescent valve,新月形瓣

用法和例句

Rectifying nipple inversion by using crescent valve plugger and continual traction nipple with home-made external fixture;

新月形瓣充填加自制外固定架牵引矫正乳头内陷

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