述无 meaning in Chinese

non-existence

The system of bone age assessment without film is put forward under this background . this system is still based on the standard of estimating skeletal maturity for chinese ( method of chn scoring ) . it is a joint production of iatrology and technology of image processing , etc
本文所述无胶片化骨龄评价系统的研制，就是在此背景下提出的。本系统仍以中国人骨成熟度评价标准( chn记分法)为依据，是医学以及图像处理等多种学科的交叉产物。