后前位x线片检查,后前位口外x线照片检查的英文

posteroanterior extraoral radiographic examination

• 后:    behind; back; rear
• 前:    front
• 位:    place; location
• x:    vt. (x-ed, x'd x-i ...
• 线:    thread; string; wi ...
• 片:    a flat,thin piece; ...
• 检查:    check up; inspect; ...
• 照片:    photograph; photop ...