The calomel electrode has a small pinhole opening or wick.
甘汞电板上有一个针孔或砂芯。
But be aware the ingredient might also be listed as "mercurous chloride, " "calomel, " or "mercuric.
但是小心那些成分也可能被标为“甘汞”“氯化亚汞”或“含汞的”。
We can measure the calcium content of the colored or turbid drink using the method of taking calcium electrode as indicator electrode and calomel electrode as reference electrode.
"late 17th cent.: modern Latin, perhaps from Greek kalos ‘beautiful' + melas ‘black' (perhaps because it was originally obtained from a black mixture of mercury and mercuric chloride)."