无液气压计

例句：

1. 1. This instrument is used to measure the pressure in a vacuum.
   这个仪器用于测量真空中的压强。
2. 2. The engineer used an air-pressure gauge to check the accuracy of his calculations.
   工程师用一个气压表来检查他的计算的准确性。
3. 3. The scientist developed a new type of pressure gauge that could withstand high temperatures.
   科学家开发了一种新型的压力计，能够承受高温。