学名为铂(platinum),又称纯白金、正白金或真白金。但这些称呼并不合理,并且容易与白色金混淆。它的符号是Pt,银灰白色,比重21.35,熔点1700℃,摩氏硬度4 - 4.5度,化学性稳定,除王水以外不受酸硷腐蚀。纯铂比较柔软,加入钌、铑、钯等金属会增加其硬度。南美印地安人早在15世纪前就制作铂金首饰,欧洲人迟至19世纪中叶以後才开始采用,目前日本为铂的最大消费国。
当年,美国一家报纸曾刊登了一则园艺所重金悬赏征求纯白金盏花的启事。
One year, a newspaper of the United States published an announcement the horticultural institute offered a reward at a high price for the pure white marigold.
我们保证所有售出的95%纯白金首饰及白金标志是“950”的质量保证。
We guarantee that all platinum jewellery sold is 95% pure platinum and is hallmarked "950" assuring its quality.
本发明公开了一种用鸡粪便作培养料种植纯白金针菇的方法,该种植方法 包括如下步骤:菌种的制备;
The invention discloses a method for planting pure white needle mushrooms with chicken dung as a culture material. The planting method comprises the following steps: a strain is prepared;
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