求问（b）表达那样？

晓月168 · 发表于 2018-12-5 11:03:02

（6）Fill the following quantity of water, and measure the capacitance
of the tank with the Capacitance meter. 0, 0.5, 10, 20, 30, 40, 50,
57 US. Gallons (0, 1.9, 37.9, 75.7, 113.6, 151.4, 189.3, 215.7 liter)
Record the capacitance value and actual quantity of filled water.
(7) Calculate the actual errors of the capacitance data on each water
quantity. Then confirm if the capacitance data satisfy the following
requirements.
(a) 3600 pF ≦ CF ≦ 5400 pF
Where,
CF: Capacitance at full 57 gallons (215.8 liter)
(b) ｜EA max EA min｜≦ 4 %
Where,
EA = (CA - C theory)/CF....................1* C
theory = CF × Fractional Tank Level......2* CA:
Actual (measured) capacitance
EA: Actual Error
EA min: Minimum Actual Error
EA max: Maximum Actual Error

kevin135022 · 发表于 2018-12-5 12:23:27

哈哈，最大减最小不大于这么多

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[1-19通用] 求问（b）表达那样？