pressurelessadj.无压的pressuren.压强；压力；压迫v.施压Pressure Reset Control变静压控制pressure balance valve平衡活门pressure sterilization压力灭菌pressure lifting force加压提升力pressured power supply施压供电pressure control valve压力控制阀pressure-pump method压力泵法pressure drop profiles阻力损失pressure fixing method压力定影法pressure tank operator增压水箱操作人员