(noun.) a soft silver-white or yellowish metallic element of the alkali metal group; turns yellow in air; occurs in celestite and strontianite.
手打:兰斯洛特
双语例句
Many other chemicals can be used, however, for making the fluorescing screen, such as the sulphides of calcium, barium and strontium. Edward W. Byrn.十九世纪发明进展.