斜坡
发表于 2025-3-30 10:29:03
,Aggregations of Atoms—The Fluid States,one or more of the three states of aggregation: gas, liquid, and solid. In gases, the spacing of the atoms or molecules is large (except at very high pressures), but in liquids and solids each atom is in close proximity to its neighbours. The state of aggregation in which a particular group of atoms
原谅
发表于 2025-3-30 15:02:23
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用不完
发表于 2025-3-30 18:06:23
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defuse
发表于 2025-3-30 20:52:09
,Aggregations of Two Sorts of Atoms—Binary Alloys,The mechanical and physical properties of the mixture may be appreciably different from those of any one of the constituent pure elements. Because of the great variation of properties obtainable by alloying, alloys are of the greatest importance in engineering; pure metals have a much more restricte
涂掉
发表于 2025-3-31 01:06:52
The Strengthening of Metals,a. It is possible to grow dislocation-free crystals—known as .—which have strengths which approach the theoretical value. However, these are very small, very expensive to produce, and no plant has yet been made for large scale production.
legislate
发表于 2025-3-31 05:42:23
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不易燃
发表于 2025-3-31 11:56:01
Fatigue,rmanent deformation to herald the fracture, although these components will safely withstand even greater loads if applied once only in a steadily increasing manner, and under such conditions will show considerable plastic deformation.
ICLE
发表于 2025-3-31 13:38:23
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令人苦恼
发表于 2025-3-31 19:20:19
Corrosion,xide or other compound. It may also be defined as the passage of the metal atoms from the metallic to the ionic state. In some cases the compound will form a protective layer which reduces and prevents further corrosion, but in others this is not so and further corrosion is not inhibited.
FLOAT
发表于 2025-3-31 22:17:44
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