在测量铜块密度ρ的实验中,以下表达正确的为: A: ρ=(8.35256 ± 0.0153)g cm-3,U rρ=0.1834% B: ρ=(8.352 ± 0.015)g cm-3,U rρ=0.18% C: ρ=(8.353 ± 0.015)g cm-3,U rρ=0.200% D: ρ=(8.35256 ± 0.015)g cm-3,U rρ=0.18%
在测量铜块密度ρ的实验中,以下表达正确的为: A: ρ=(8.35256 ± 0.0153)g cm-3,U rρ=0.1834% B: ρ=(8.352 ± 0.015)g cm-3,U rρ=0.18% C: ρ=(8.353 ± 0.015)g cm-3,U rρ=0.200% D: ρ=(8.35256 ± 0.015)g cm-3,U rρ=0.18%
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