The air pressure is determined by the height of mercury column.
利用水银柱的高度来量度气压。
He found that the mercury column measured the predicted height.
他发现水银柱达到了预期的高度。
The height of the mercury column AB will vary according to the air pressure.
水银柱ab之间的高度会随气压而改变。
It is a double column, You can see, it starts with hydrogen and goes to mercury in ascending order of atomic mass.
双纵栏,你们看到,从氢开始,然后到水银,按原子质量的升序排列。
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