试纸 30条/$15, 即是 $0.5 一条。一年花$720, 就是说用了 1440条,每天就是是 1440/365= 4 条了。
试纸 30条/$15, 即是 $0.5 一条。一年花$720, 就是说用了 1440条,每天就是是 1440/365= 4 条了。
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哈,也琢磨半天。你是对的。LZ算法就是每天都测4次,这样每月用试纸 4X30天=120条才会达60元。。
-pickshell-
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03/01/2023 postreply
15:15:12
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