单词	后置形式
释义	后置形式postfix form
随便看	focal point focal point antenna focal point competition focal point of focal point of--reflector focal point pricing focal points of line congruence focal power focal price focal property focal radius focal range focal ratio focal ratio degradation focal reducer focal sclerosing osteomyelitis focal seizure focal set focal sphere focal spot focal--spot focal spot pinhole radiogram focal spot slit radiogram focal spot star radiogram focal spot to image receptor distance