The name is a reference to International Prototype kilogram, as a base unit of mass in the International System of Units.
它的名字和国际单位中表示基本聚合物质质量千克有关。
The international prototype kilogram, the primary standard (see weights and measures) for weight, is made of an alloy comprising 90% platinum and 10% iridium.
国际标准质量千克的原型就是由90%铂和10%铱的合金制成的。
It was then necessary to produce the two prototype standards (metre and kilogram) on to which the measurements would be copied for distribution across France.
就在那时，需要去产生两个标准的原型(米，公斤)，根据这两个标准的原型，度量衡才能复制到法国各地。
It was then necessary to produce the two prototype standards (metre and kilogram) on to which the measurements would be copied for distribution across France.
就在那时，需要去产生两个标准的原型(米，公斤)，根据这两个标准的原型，度量衡才能复制到法国各地。
应用推荐