他用来清洁仪器的化学物质与他在实验中使用的化学物质混合在一起，产生了一种亮紫色。
The chemicals he used to clean his instruments mixed with the chemicals he used in his experiment and produced a bright purple color.
为了验证这个想法，她和同事们设计了一种设备，利用短脉冲电使周围空气离子化，产生紫色富含氧离子的等离子火焰。
To test this idea, she and her colleagues designed a device that USES short pulses of electricity to ionise the surrounding air, creating a purple plume of plasma rich in oxygen ions.
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