Compare with the glassthermometer, have no mercury damage, clean to read firmly features.
与玻璃温度计比较，具有无汞害、读数清晰、坚固耐用的特点。
2
A thermometer often now, and more often back in the early 1800s, consists of a glass tube up which a column of mercury or alcohol can travel from a reservoir at the base.
现在常见的温度计由一个玻璃管和一个位于底部的贮液槽组成，贮液槽中的水银或酒精沿玻璃管上升形成液柱。
3
Put a food thermometer in a glass of water on the middle shelf, where the air temperature is most accurate. Leave it there overnight and take a reading in the morning.