倒钩 发表于 2025-3-21 17:50:04

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柳树;枯黄 发表于 2025-3-21 22:40:03

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Budget 发表于 2025-3-22 03:19:06

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处理 发表于 2025-3-22 07:23:00

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Heterodoxy 发表于 2025-3-22 12:41:22

Geoffrey Hunter sown. The highest removal percentages of .Cs were obtained in amaranth (0.093 %) and sunflower (0.038 %) in the light-colored Andosol and gray lowland soils, respectively. This result indicates that it is difficult to remove radiocesium from contaminated soil by means of phytoremediation.

圆木可阻碍 发表于 2025-3-22 15:41:59

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Dignant 发表于 2025-3-22 17:45:34

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DNR215 发表于 2025-3-22 23:56:10

Introduction: General Notions,To get a rough idea of what the metatheory of logic is, start with.Distinguish these from.(Two different sentences, e.g. one in French, one in English, might be used to express the same truth of logic.)Now consider.This last is, roughly, ..

Adrenal-Glands 发表于 2025-3-23 04:31:09

Truth-functional Propositional Logic, is the theory of (1) those logical truths that can be expressed using only unanalysed propositional variables and truth-functional propositional connectives, and (2) principles of inference relating things that can be expressed by those means.

Colonnade 发表于 2025-3-23 05:34:56

First Order Predicate Logic: Undecidability,In this section we prove various results about decidability, using only the informal notion of effective method explained in §7.
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查看完整版本: Titlebook: Metalogic; An Introduction to t Geoffrey Hunter Textbook 1971Latest edition Geoffrey Hunter 1971 logic.mathematics.metalogic