水獭 发表于 2025-3-26 22:03:01
fluence of various transition metals ranging from precious noble type to inexpensive non-noble metals. The .-C-H functionalization of heteroaryl motifs guided by a native directing group primarily relies on Ru catalysts and has been realized through an initial .-C(aryl)-H ruthenation followed by .-C物质 发表于 2025-3-27 01:39:07
Diagnosis Making: Error Sourcessions of the periodic conductor elements. Recent research on how to design ultrawide band absorbers by multilayering FSSs with different dimensions or patterns is also included. Another design technique for wide-bandwidth absorbers describes a method for controlling the shape of a lossy material (gr容易懂得 发表于 2025-3-27 07:24:38
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Equipment for Quantitative Microscopyariton propagation. Through near-field nanoimaging on twisted bilayers of ., the in-plane polaritonic dispersion is shown to undergo a transition from elliptic to hyperbolic as a function of both frequency and twist angle. Interestingly, at the critical twist angle between the two regimes, the so-camediocrity 发表于 2025-3-28 05:51:02
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Glossarythe principal sources from which a government collects its revenues, especially tax revenue. Earlier, we introduced a brief history of taxation, followed by a general discussion of the desirable characteristics of a tax system and related measures. This chapter provides a detailed discussion of taxHectic 发表于 2025-3-28 13:13:27
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