点滴试验是一种微量化学分析方法。只用一滴试液，在滤纸或点滴板上，即可进行分析，常能用一滴试液检出1微克（μg）以下的物质。特点是迅速、经济、可靠，不用复杂仪器，对无机物和有机物都适用。20世纪20年代，F.法伊格尔系统地研究了利用灵敏的有机试剂检出金属离子，奠定了点滴试验的基础。
用无铬化学方法在铸铝合金表面制得黑色转化膜，利用点滴试验评价了膜的耐蚀性能。
Black conversion film with non-chromate was obtained on a cast aluminum alloy by chemical methods, and the anticorrosion properties of the film were evaluated by means of dropping test.
将黄铜片用上述三种溶液钝化处理后，通过湿热加速试验、硝酸点滴试验、盐水浸泡试验及电化学测试对耐腐蚀性进行了研究。
The corrosion resistance of samples after passivation is studied in the experiment by humid-air accelerated corrosion test, nitric acid titrating test and the brine dipping test.
我觉得我们打的点滴里，除了有他们正在试验的药物之外，肯定还有ED556——这种药几乎能把你的羞耻心给降到零点。
It felt like our drip had, in addition to whatever they were testing, some ED556 in it, which lowers your shame level to like nil.
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