杀虫剂
发表于 2025-3-28 14:38:56
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Armada
发表于 2025-3-28 22:12:29
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acetylcholine
发表于 2025-3-29 01:18:27
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dyspareunia
发表于 2025-3-29 03:49:29
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Urea508
发表于 2025-3-29 09:11:36
in technology (for materials testing), and in medicine (for medical X-rays). The most common method of genera ting such radiation is via the process of "bremsstrahlung" (a German term coined by A. Sommerfeld, meaning "braking radiation") in which a beam of electrons is direc ted into matter (e. g