fluorescent penetrant test

例句：

1. 1. This fluorescent penetrant test is used to detect the presence of certain chemicals in the soil.
   这种荧光渗透测试用于检测土壤中某些化学物质的存在。
2. 2.The company conducted a fluorescent penetrant test on the new product before it was released.
   在新产品发布前，该公司对该产品进行了荧光渗透测试。
3. 3.The fluorescent penetrant test revealed that there were traces of mercury in the water sample.
   荧光渗透测试显示水样中有微量的汞残留。