利用水银柱的高度来量度气压。
The air pressure is determined by the height of mercury column.
水银柱ab之间的高度会随气压而改变。
The height of the mercury column AB will vary according to the air pressure.
托里切利在水银气压计方面的研究表明大气的压力可以让气压计中的水银柱上升30多英尺。
Torricelli's work on water barometers showed that the pressure of the atmosphere could balance a column of water just over30feet in height.
托里切利在水银气压计方面的研究表明大气的压力可以让气压计中的水银柱上升30多英尺。
Torricelli's work on water barometers showed that the pressure of the atmosphere could balance a column of water just over 30 feet in height.
气压计的水银柱在下降，看来天气一定要发生变化了。
The glass is going down, so we must expect a change in the weather.
人工测量的血压计是水银柱血压计和气压表式血压计。
Manual measuring USES mercury column type sphygmomanometer or barometric pressure manner sphygmomanometer.
气压表的水银柱在上升。
人工测量的血压计是水银柱血压计和气压表式血压计。
Water table is a surface on which the presure is atmospheric.
人工测量的血压计是水银柱血压计和气压表式血压计。
Water table is a surface on which the presure is atmospheric.
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