基本解释[经济学]镗孔刀具词组短语短语boring g apparatus 镗孔刀具hole boring apparatus 钻深孔装置Laser Boring Apparatus 激光打孔仪long -hole boring apparatus 钻深孔装置self -boring type torsion shear apparatus 自钻式扭剪仪专业释义经济学镗孔刀具