| 释义 |
atomic number 81
基本英英
英Noun:a soft grey malleable metallic element that resembles tin but discolors on exposure to air；it is highly toxic and is used in rodent and insect poisons；occurs in zinc blende and some iron ores
Noun:
a soft grey malleable metallic element that resembles tin but discolors on exposure to air; it is highly toxic and is used in rodent and insect poisons; occurs in zinc blende and some iron ores |