Offbeat
发表于 2025-3-30 08:16:14
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frozen-shoulder
发表于 2025-3-30 15:22:09
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支形吊灯
发表于 2025-3-30 20:07:07
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同音
发表于 2025-3-30 21:46:12
https://doi.org/10.1007/978-1-4684-2742-4Absorption; Atom; NMR; Sorption; catalyst; fields; fluorescence; instruments; metals; spectroscopy; ultraviole
DEI
发表于 2025-3-31 01:07:28
The Preparation of Metal Ingots for Use as Chemical and Spectrographic Standardsn.Table 1. Nominal Composition of B-1900.as long term chemical standards are prepared by normal foundary techniques. In both cases the levels of trace or contaminant elements obtained are difficult to predict, particularly when they are volatile at the melt temperature or do Rot alloy with the matrix.
agenda
发表于 2025-3-31 05:58:21
Qualitative Analysis of Precipitates by Graphite Filter Methodse precipitates can be collected by a Millipore filter and easily analyzed qualitatively. When an x-ray fluorescence spectrometer is not available, or the suspected elements are not amenable to the technique, the methods described here are helpful.
DNR215
发表于 2025-3-31 10:08:59
A Simple Multiport Atomic Absorption Burner Heads easy to fabricate, and the cost is only a fraction of the cost of the product that is available commercially. It can be made out of a single slot old burner head or stainless steel tubing of a suitable size.
半身雕像
发表于 2025-3-31 15:29:08
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口诀法
发表于 2025-3-31 20:54:42
J. Dieleman,A. W. Witmer,J. C. M. A. Ponsioen,C. P. T. M. Damens of equilibrium critical phenomena, providing this background in a self-consistent way and establishing basic notations. This chapter may be used to recall the main features of modern theories of phase transitions for beginners who are not entirely familiar with the concepts of scaling and universa
公司
发表于 2025-4-1 00:03:55
William Sunderland,Robert S. Hodge,Walter G. Boyle,Eugene Fishers of equilibrium critical phenomena, providing this background in a self-consistent way and establishing basic notations. This chapter may be used to recall the main features of modern theories of phase transitions for beginners who are not entirely familiar with the concepts of scaling and universa