由于这些原因，保持轮胎的正常气压是非常重要的。
For these reasons, it is very important to maintain proper pressure in the tires.
杯子成型需要气压提供，正常气压为6 - 8兆帕。需要配三立方空压机。
Glass forming pressure needed to provide air pressure, the normal pressure is 6-8 MPa.
正常的气压大约是每平方英寸15磅。
大气压低于正常值的气团；常伴有降水。
在正常大气压下，水到摄氏100度就会沸腾。
Water will boil at 100 degree centigrade under normal pressure.
在正常大气压下，水到摄氏100度就会沸腾。
Water will boil at 100 degree centigrade under normal pressure.
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