卑贱
发表于 2025-3-21 16:58:06
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专心
发表于 2025-3-21 23:13:55
Elisabeth Schlemmera scattering medium, loss of energy occurs simultaneously with the diffusion process. The collisions can be either elastic or inelastic. As long as the neutron energy is greater than about 1 ev, the struck atoms can be considered free and at rest before the collision. This is no longer the case at l
小口啜饮
发表于 2025-3-22 03:16:46
Yvonne Schützea scattering medium, loss of energy occurs simultaneously with the diffusion process. The collisions can be either elastic or inelastic. As long as the neutron energy is greater than about 1 ev, the struck atoms can be considered free and at rest before the collision. This is no longer the case at l
Neolithic
发表于 2025-3-22 06:12:59
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花束
发表于 2025-3-22 11:26:56
Yolanda te Poel,Manuela du Bois-Reymond,Elke Zeijlbeen accepted as a necessary and routine test procedure. In the late 60’s, neutron radiography was considered only for inspection of space systems components and other high reliability and/or man-rated systems. As the Space program slowed, applications narrowed to inspection of components for milita
ASTER
发表于 2025-3-22 12:55:46
Suus M. J. van Hekken,Hans-Joachim Schulze,Langha de Meybeen accepted as a necessary and routine test procedure. In the late 60’s, neutron radiography was considered only for inspection of space systems components and other high reliability and/or man-rated systems. As the Space program slowed, applications narrowed to inspection of components for milita
commune
发表于 2025-3-22 20:31:30
Hartmut M. Griesel of visual non-destructive testing, neutrons can be attenuated by light materials like water, hydrocarbons, boron, penetrate through heavy materials like steel, lead, uranium, distinguish between different isotopes of certain elements, supply high quality radiographs of highly radioactive component
紧张过度
发表于 2025-3-22 23:51:28
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Fretful
发表于 2025-3-23 01:41:16
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Scleroderma
发表于 2025-3-23 06:56:05
Postmoderne Familienkindheit?, hat gerade die Familie mit Blick auf das Aufwachsen von Kindern und ihre gedeihliche Entwicklung einen ganz erheblichen Bedeutungszuwachs erfahren, der insbesondere durch eine Zunahme elterlicher Zuständigkeit und Verantwortlichkeit geprägt ist (vgl. Neumann, 1993; Honig, 1993). Dies läßt sich vor