orificen.孔
orifice plate pulse column孔板脉冲柱
orifice-plate flow meter孔板计量
orifice energy dissipation孔口消能
orifices of pulmonary veins肺静脉口
orifice of nasolacrimal duct鼻泪管口
orifice discharge coefficient孔流系数
orifice of inferior vena cava下腔静脉口
orifice of vermiform appendix阑尾口
orifice of superior vena cava上腔静脉口
Orifice of salivary gland duct唾液腺管口