毫米汞柱 millimeters of mercury
n．汞，水银mercury
原子荧光汞光度计atomic-fluorescence mercury photometer
汞池电极mercury pool electrode
【化学】汞电极，氯碱电解mercury cathode chlorine-alkali electrolysis
汞汽整流mercury vapour rectifier
汞皮疹mercury rash
热阴极汞孤整流器hot-cathode mercury-arc rectifier