天气预报15天查询> 家居> 硬币是什么材质

硬币是什么材质

更新时间: 2020-12-02 13:46:34     

包括铝合金、不锈钢、钢芯镀铜合金、钢芯镀镍合金。硬币是由金属铸造的货币,在我国有几千年的历史,最早的硬币是由商朝的宝德铜贝制成。硬币使用方便,也方便携带,耐磨损,流通时间长。硬币根据用途不同,可以分为:流通币、收藏币、纪念币、投资币等。硬币的设计一般需要做到:概括性、纪念性、民族性、单一性。

关键词: 硬币 什么 材质

如有意见、反馈、侵权或投诉等情况,请联系:

电话:
邮箱:

我们将会在48小时内给与处理!

版权所有 Copyright ? 2009-2020 tianqiyubao3.com

页面:/news/view-3540843/ | 耗时:0.3044 s | 内存:1.89 MB | 查询:4 | 缓存读取:4 写入:0 | 加载文件:23
select * from tbl_Articles WHERE ArticleID=3540843 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=3540843 LIMIT 0,1
select * from tbl_Articles_sphinx where id=3540843 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(3529347,3542933,3544303,3543217,3540828,3543480,3542004,3542473,3544024,3541451,3543656,3541137,3542391,3542065,3540815,3541188,3540780,3541083,3542149,3543782,3542924,3540827,3541528,3540739,3541718,3528224,3541615,3541707,3541255,1067137) ORDER BY field (ArticleID,3529347,3542933,3544303,3543217,3540828,3543480,3542004,3542473,3544024,3541451,3543656,3541137,3542391,3542065,3540815,3541188,3540780,3541083,3542149,3543782,3542924,3540827,3541528,3540739,3541718,3528224,3541615,3541707,3541255,1067137)