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Use "impedances" in a sentence
"The claim that insufficient progress and perceived favoritism “significantly impede” the US mission in the region does not entail that the mission will succeed if only these impedances disappear."
"As I mentioned, "impedance matching" refers to an "equality" of two impedances."
"As noted numerous times on this blog and elsewhere, when adding impedances, the result is a logarithmic decrease in power/energy."