1. This paper presents a brief report of a study on the production technology of a new type of orthochromatic medical X -ray film.
本文扼要报导了一种新型的感绿医用X射线胶片的研制工作。

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2. This paper presents a brief report of a study on the production technology of a new type of orthochromatic medical X -ray film.
本文扼要报导了一种新型的感绿医用X射线胶片的研制工作。

来自互联网