| 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〔ultramicrotome〕A microtome for cutting very thin sections of material for use in electron microscopy.超微切片机：用来切割在电子显微镜下观察的物体的非常细小的切片的切片机美国传统 |