An aneroid barometer consists of a disk - shaped capsule made of a thin metal membrane . the capsule is partially evacuated of air 空盒气压表有一个用金属薄片造成的扁圆形空盒,盒内部份空气抽空。
An aneroid barometer consists of a disk - shaped capsule made of a thin metal membrane . the capsule is partially evacuated of air 空盒气压表有一个用金属薄片造成的扁圆形空盒,盒内部份空气抽空。