under pressure
... uncooled exhuse sprk rrester of vehicle 非冷却型机动车排气火花熄灭器 under pressure 负压 under burning 欠烧的 ...
subatomospheric pressure
... subatomospheric pressure 负压 suction inductor 吸入式比例混合器 super-heated steam 过热蒸汽 ...
subatmospheric pressure
负压 subatmospheric pressure
简单地说,“负压”是低于常压(即常说的一个大气压)的气体压力状态。