不能约
发表于 2025-3-27 00:33:29
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冰河期
发表于 2025-3-27 01:36:27
Ron Acierno,Michel Hersen,Robert T. AmmermanCalculus has developed systematic procedures for handling problems in which relationships between objects evolve and become exact only after one passes to a limit. As a consequence, one often ends up proving equalities between objects by what looks at first like the absurd procedure of showing that the difference between them is arbitrarily small.
激励
发表于 2025-3-27 07:22:17
Integration of functions in higher dimensions is much more difficult than it is in one dimension. The basic reason is that in order to integrate a function, one has to know how to measure the volume of sets. In one dimension, most sets can be decomposed into intervals (cf. Exercise ), and we took the length of an interval to be its volume.
Outmoded
发表于 2025-3-27 11:18:16
Stewart A. Anderson,Petronilla Vaulx-Smith,Matcheri S. KeshavanPolymorphs are materials that have many (“poly”) structures (“morphs”), but the same chemistry. An example of polymorphs of silica is shown in Figure 11-1. Both structures are repetitive, and both are made from silicon tetrahedrons. They differ, however in their pattern or crystal structure.
Ebct207
发表于 2025-3-27 16:11:33
Lynn P. Rehm,James P. LePage,Susanne BaileyThis chapter illustrates the effects of material variations and processing techniques on polycrystalline ceramic surfaces. Dry-pressed high alumina ceramics are used as the basis for discussion . The changes in surfaces are observed in thin-film circuit patterns that have been developed on these alumina surfaces.
责怪
发表于 2025-3-27 18:02:02
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omnibus
发表于 2025-3-27 22:18:21
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单色
发表于 2025-3-28 03:01:24
Gary Alan-Hue Christenson,Thomas Brooke MackenzieMechanics of solids is concerned with understanding the response of solid materials (as opposed to fluids) when subjected to external forces and changes in environmental conditions such as temperature.
施舍
发表于 2025-3-28 09:31:39
Terence M. Keane,Lisa M. Fisher,Karen E. Krinsley,Barbara L. NilesThe forces per unit area on each face of a cubical element are the . on that face. There are two types of stresses; normal stresses are perpendicular to the face of the element and shear stresses are parallel to the element face.
绑架
发表于 2025-3-28 11:16:32
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