Spouse
发表于 2025-3-21 16:07:48
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损坏
发表于 2025-3-21 22:34:33
Ceramics, high-temperature heat treatment called firing. Up until the past sixty years, the most important materials in this class were called traditional ceramics, for which the raw material is ., e.g. ., tiles and in addition, glasses and high-temperature ceramics. Recently, significant progress has been m
甜食
发表于 2025-3-22 00:38:31
Polymers,...................................... Other natural polymers such as proteins, enzymes, . and cellulose are important in biological and physiological processes in ................. and ................ With modern research tools it is possible to determine the molecular structures of these groups o
天真
发表于 2025-3-22 05:19:41
Composites, a stiffer material called lignin. ................... is a composite of the strong yet soft protein collagen and the hard, brittle mineral apatite. Yet many modern technologies require materials with unusual combinations of properties that cannot be met by natural composites or the conventional met
挑剔为人
发表于 2025-3-22 10:15:08
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PHIL
发表于 2025-3-22 14:15:32
Polymers,mechanical ................. such as stiffness and strength are required. The synthetics can be ................. inexpensively, and their properties may be controlled so that many are superior to their natural .. In some ................., metal and wood parts have been replaced by plastics, which
PHIL
发表于 2025-3-22 19:42:47
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Between
发表于 2025-3-22 22:08:51
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黑豹
发表于 2025-3-23 05:12:04
The Palgrave Handbook of African Philosophynsequently, a new generation of these materials has evolved, and the term ceramic has taken on a much broader meaning. These new materials are applied in, e.g. electronics, computers, communication technology, biomedical implants and aerospace.
Explosive
发表于 2025-3-23 08:36:00
Ceramics,nsequently, a new generation of these materials has evolved, and the term ceramic has taken on a much broader meaning. These new materials are applied in, e.g. electronics, computers, communication technology, biomedical implants and aerospace.