A.0.032;32×103 B.0.032;3.2×105 C.3.2×10-3;32×105 D.3.2×10-3;32×103
A.1.995~2.005g B.1.95~2.05g C.1.99~2.01g D.1.999~2.001g
A.0.1%~0.2% B.1%~2% C.0.2%~0.5% D.0.5%~1%