| 释义 |
锇é金属元素,符号Os(osmium)。灰蓝色,质硬而脆,比重是金属中最大的。用于制催化剂等,锇铱合金可作钟表、仪器的轴承。{osmium (Os); metallic element, greyish-blue in colour, and hard and brittle of texture, having the densest specific gravity among all metals, used in making catalysts. The alloy of osmium and iridium is used for gears in time-pieces and other instruments.} |