STING
发表于 2025-3-23 12:36:18
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IST
发表于 2025-3-23 16:32:16
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FLINT
发表于 2025-3-23 22:00:28
Experimental Procedures in NMR Spectroscopy,ents is given in Table 3.1. A small amount of a reference compound, usually tetramethylsilane, (CH.).Si, is added as an internal standard. For a routine continuous-wave type NMR spectrometer, about 10–20 mg of the compound is required for a good proton NMR spectrum, but in the FT instruments 1–10-mg
receptors
发表于 2025-3-23 22:52:07
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canvass
发表于 2025-3-24 03:31:50
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Affection
发表于 2025-3-24 07:59:10
elopments of new pulse sequences, with particular reference to 2D-NMR spectroscopy. Since this book is written for students of chemistry and biochemistry as well as for biology students who have chemistry as a subsidiary, it was decided to avoid a complex mathematical treatment and to present, as far as possi978-1-4612-9350-7978-1-4612-4894-1
refine
发表于 2025-3-24 13:08:22
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unstable-angina
发表于 2025-3-24 15:27:24
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electrolyte
发表于 2025-3-24 19:02:36
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过分自信
发表于 2025-3-25 01:21:47
It included what today is Croatia, northern Serbia, Slovakia, the Burgenland of today’s Austria, and Hungary. Transylvania continued to exist as a separate administrative unit, but in 1867 it was merged with Hungary proper. According to Kálmán Benda, 1804 Hungary, including Transylvania, Croatia, a