绝对压力为P,表压力为Pg真空为Pv,大气压力为Pb,根据定义有()A、P=Pb-PvB、P=Pb-PgC、P=Pv-PbD、P=Pg-Pb
绝对压力为P,表压力为Pg真空为Pv,大气压力为Pb,根据定义有()
- A、P=Pb-Pv
- B、P=Pb-Pg
- C、P=Pv-Pb
- D、P=Pg-Pb
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