vacuum pressure gauge真空压力计;真空压力表;负压压力表
Ammonia vacuum-gauge氨用真空表
engine vacuum checking gauge发动机真空测试计
Membrane vacuum-gauge膜片真空表
vacuum-gauge真空计;真空表
VACUUM SUCTION GAUGE真空吸力表
vacuum m gauge pipe真空压力计管
vacuum m gauge tester真空计测试器
Vacuum and Gauge Pressure真空度与表压
N（名词） any of a number of instruments for measuring pressures below atmospheric pressure 真空气压表