化學(xué)分析的用法和樣例：
例句
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經(jīng)過(guò)化學(xué)分析，我們知道了礦石的構成。
After chemical assay, we have known the composition of the ore. -
通過(guò)顯微鏡觀(guān)察測知的只能通過(guò)顯微鏡觀(guān)察或化學(xué)分析才能發(fā)現的，如微量的血樣
Detectable only by microscopic examination or chemical analysis, as a minute blood sample.
