There is mercury on the other side of this mirror. 鏡子的另一邊是水銀。
Mercury wetted reed switches are constructed in the same way as dry reed switches with the addition of a small amount of mercury inside the glass tube. 水銀濕簧開(kāi)關(guān)與干簧繼電器的構造方式相同,僅僅是在玻璃管內部增加了少量了的水銀。