| 释义 |
powder photography ˈpaudəfəˈtɔgrəfi:
基本英英近义反义
粉末照相术
Noun:
a process for identifying minerals or crystals; a small rod is coated with a powdered form of the substance and subjected to suitably modified X-rays; the pattern of diffracted rings is used for identification近义词 powder method粉末法 |