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单词
a* unit
释义
A* unit
A* unit
[
′ā‚stär ‚yü·nət
]
(physics)
An atomic standard unit of length, based on the tungsten Kα
1
line, approximately 10
-11
centimeter; used for measurements of x-ray wavelengths and of crystal dimensions.
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更新时间:2026/10/23 10:39:32