mercury dropping electrode

例句：

1. 1. The mercury drop electrode is used to measure the electrical resistance of a sample.
   汞滴电极用于测量样品的电阻。
2. 2.The mercury drop electrode is a sensitive tool for measuring small amounts of substances.
   汞滴电极是一种敏感的工具，用于测量少量物质。
3. 3. The mercury drop electrode was used in the experiment to detect the presence of a particular chemical.
   在实验中使用汞滴电极来检测特定化学物质的存在。