求翻译：硒作为一种必需微量元素，在地壳中分布广泛，地壳上几乎所有物质都含有微量。由于硒的一些特性，硒广泛应用于电子、化工、冶金等工业部门。特别是高新技术产产业部门。硒也广泛地用于医药、保健和农业等部门。在进行硒化物的合成、生物活性试验及应用的研究工作中，都要涉及硒的利用。是什么意思？

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The selenium took one kind of essential trace element, distributes widely in the earth's crust, in the earth's crust nearly all materials all inclu

As an essential trace element selenium, widely distributed in the crust, almost all substances containing trace on the Earth's crust. Due to the characteristics of selenium, selenium is widely used in electronic, chemical, metallurgical and other industries. Especially high-tech industry sectors. Se