【化】 内螺纹

internal control system

female internal genital organs【解剖】;organa genitalia feminina interna【解剖】

internal mammary artery

internal blowing mammary welling-abscess

internal budding, endogenous budding, endogemmy

internal-external upset tubing【油气】

cardinal cell【昆】;discoidal triangle【昆】;internal triangle【昆】

heating of internal body cavities for curative treatment