tst.json

{
  "EQ1": {
    "parameters": {
      "EQ1_coeff1": {
        "value": 1.0e-06
      },
      "P2": {
        "value": 3.0
      },
      "P3": {
        "value": 3.0
      }
    },
    "expression": "(EQ1_coeff1 * ((1 dimensionless)/(1 dimensionless)) / (1 dimensionless))*(var1^P3/(var1^P3 + P2^P3) )"
  },
  "EQ2": {
    "parameters": {
      "EQ2_coeff2": {
        "value": 5253
      },
      "K2": {
        "value": 3
      },
      "K5": {
        "value": 1
      },
      "K3": {
        "value": 525
      },
      "K4": {
        "value": 3
      },
      "K6": {
        "value": 2
      },
      "K7": {
        "value": 0.01
      }
    },
    "expression": "(EQ2_coeff2 *((var2*var3)/(K1*K2))* ((1 dimensionless - ((var3*var4)/(var2))/K6) / ((1 dimensionless + var1/K1)*(1 dimensionless + var2)+ 1 dimensionless)))*(1 dimensionless/(1 dimensionless + var5/K7))"
  }
}