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bar是一个常用的压强单位。早先气象学中常用毫巴，后改用等值的国际单位百帕。 1巴（bar)=100千帕（kPa)=10牛顿/平方厘米(10N/cm2)=0.1MPa 应用：The output of active support system controller is current between 4~20 ma; 4ma is proportional to 0.2 bar and 20...