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单词
photoemissive tube photometer
释义
photoemissive tube photometer
photoemissive tube photometer
[
¦fōd·ō·i′mis·iv ¦tüb fə′täm·əd·ər
]
(engineering)
A photometer which uses a tube made of a photoemissive material; it is highly accurate, but requires electronic amplification, and is used mainly in laboratories.
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更新时间:2025/10/8 19:27:18