名词
中文翻译：Unknown
同义词：
['spot test', 'spot test reaction']
例句：
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1. The spot reaction of the chemical was very strong.
这种化学物质的斑点反应非常强烈。
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2. During the spot reaction, the color changed from red to green.
在斑点反应过程中，颜色从红色变为绿色。
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3. The spot reaction showed that the sample contained a trace amount of mercury.
斑点反应显示样本中含有微量汞。