Objective: To manufacture a simple sample enrichment appliance with nitrogen gas blowing needle and its application.

目的：一种氮气针吹(NNB)药物试样富集装置的研制和应用。

youdao

Objective: To manufacture a simple sample enrichment appliance with nitrogen gas blowing needle and its application.

目的：一种氮气针吹(NNB)药物试样富集装置的研制和应用。

youdao