| 释义 |
DEFINITIVE EXAMPLES 权威例句〔metallography〕The study of the structure of metals and alloys, especially by optical and electron microscopy and x-ray diffraction.金相学，金属结构学：以金属与合金结构为研究对象的学科，尤指用光学和电子显微镜使用法和X射线衍射法为研究手段的美国传统〔x-ray crystallography〕The study of crystal structure by means of x-ray diffraction.X射线晶体学：用X射线衍射来研究晶体结构的学科美国传统 |