精密
发表于 2025-3-25 03:35:43
2946-465X professionals who want to refresh their knowledge of the topic. This work is part of a series of introductory texts that deal with a broad range of materials-related topics in archaeometry..978-3-030-35451-0978-3-030-35449-7Series ISSN 2946-465X Series E-ISSN 2946-4668
BIPED
发表于 2025-3-25 08:39:02
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atrophy
发表于 2025-3-25 12:06:39
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昆虫
发表于 2025-3-25 19:52:53
Introduction,dered a geoscience and a branch of mineralogy. Its roots can be traced back to Theophrastus (315 BCE) who described how minerals and gems grow and to Pliny (79 CE) who mentioned identification issues of gems. At the beginning of the nineteenth century R-J Haüy and his contemporaries started to devel
absorbed
发表于 2025-3-25 20:48:55
Gems Through the Ages, rough form, or polished with curved surfaces or engraved. Simple forms of faceting appeared around the start of thirteenth century and it radically improved after the industrial revolution. During different periods in time, different cultures were considering different materials as gems. A problem
猛击
发表于 2025-3-26 01:41:41
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极微小
发表于 2025-3-26 05:10:19
Gem Treatments, Synthetics and Imitations, at the time, but also about the various types of treatments, imitations and synthetic gems. Treatments involve all processes used to modify the appearance of gem materials in order to make the more attractive and desirable. Some treatments go back to Minoan times. Imitations are materials looking s
intimate
发表于 2025-3-26 10:37:07
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语源学
发表于 2025-3-26 13:30:17
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MOT
发表于 2025-3-26 17:15:36
des the theoretical and methodological foundations for furthThis handbook provides an authoritative and truly comprehensive overview both of the diverse applications of information and communication technologies (ICTs) within the travel and tourism industry and of e-tourism as a field of scientific