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The word Numismatics comes from Latin origin and means the study or collections of coins, tokens, paper money, and sometimes related objects (such as medals)1. When discussing the value of coins it is important
to distinguish between the bullion value of a coin (i.e. the coins value based on its precious metal content) and its numismatic value. Coins with numismatic value (numismatic coins), are collectible coins valued for their age and rarity rather than, or in addition to their precious metal content. Numismatic coins are typically sold to and traded among collectors, who may be interested in them for their historical, cultural, or investment value. They may be purchased from wholesalers, national and local retail outlets and brokers, and certification labs. 尼通（NITON）XL5手持式合金分析仪
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采用ProSpectorElvax 手持式合金分析仪测试ERM®- EC680k标样和ERM
铜合金分析仪浅析 铜合金分析仪简介： 首先为大家简单介绍下铜合金分析仪这类仪器，铜合金分析仪用于铜
浪声手持式矿石分析仪原装配置的50KV微型X射线管，可以用来激发包括La, Ce, Pr，Nd，Th，Y等稀
在改造和拆卸工程以及建筑材料回收过程中，识别含石棉的材料非常重要。Thermo Scientific™ mi
在工业和消费废品材料的合理分类和回收方面，塑料和聚合物的准确鉴别至关重要。赛默飞世尔科技生产的microPH
塑料常被用来制造诸如玩具以及家具一类的产品。每年，全国会有数以千吨的塑料被废弃，它们往往会占据巨大的淹埋空间
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Thermo Scientific™ Food Defender RM 手持式拉曼分析仪是一款功能强大的拉曼光谱仪，它
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