舔食
发表于 2025-3-25 05:08:54
Diatomic Molecular Spectra,The primary interactions of light and matter take the form of emission, absorption, or scattering.
种属关系
发表于 2025-3-25 09:01:56
The Number System,The numbers we use in mathematics can be classified into various sets, some of which are subsets of others.
commonsense
发表于 2025-3-25 13:53:11
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郊外
发表于 2025-3-25 19:26:37
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bizarre
发表于 2025-3-25 21:59:40
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媒介
发表于 2025-3-26 00:41:27
Slit-Adjustment Mechanism for a 1.5-m Bausch & Lomb SpectrometerThe direct-reading head of the 1.5-m Bausch & Lomb spectrometer was designed for a fixed analytical program. The setting up of such a program is a time-consuming and highly skilled task. Since it is essential that the program on our instrument be changed frequently, the original design was unsatisfactory from our point of view.
Amplify
发表于 2025-3-26 06:41:23
Set Theory,A set is a clearly defined collection of distinct objects, which are called . or . of the set. Sets will be denoted by capital letters ., … and the elements or members by lower-case letters ., .,. … If . belongs to a set ., we write this . ϵ . (ϵ stands for ‘belongs to’, or ‘is an element of or ‘is a member of.)
误传
发表于 2025-3-26 08:28:07
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饥荒
发表于 2025-3-26 13:41:48
Simple Jet for Emission SpectrographyThe Stallwood jet. has found wide applicability in spectrochemical analysis for the suppression of selfabsorption, stabilization of the arc, improvement of signal-to-noise, etc. For the occasional user, however, its cost or complex construction could rule out this extremely useful accessory.
Corral
发表于 2025-3-26 19:17:05
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