unknown substance翻译

unknown substance的基本解释

读音: 美: 英:

未知物质：指未知的化学物质或其他物质，需要进行进一步的测试和分析以确定其性质和用途。

例句

Good move on vacating scene of unknown substance in tank.在不知道箱内有什么东西时，撤离现场是正确的。
Perplexed, they decided that the lines were not emitted by the commonplace OH molecule but an unknown substance.他们很感迷惑地判定，这些谱线不是由寻常的 oh 分子而是由一种未知物质发射的。
When trying to identify an unknown substance, the sample must first be simplified as much as possible into its constituent compounds.当试图鉴别未知物质的时候，首先需要将混合物尽量分离成单一物质。

短语

characterization of unknown substance 未知物定性
unknown scale substance 不明结垢物
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