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参数与偏差范围(1)数值范围:二至十写成2~10;5×10~6~9×10~6可写成(5~9)×10~6,但不能写成5~9×10~6;(2)百分数范围:10%~15%不能写成10~15%,(20±5)%不能写成20±5%;(3)具有相同单位的量值范围:3.5~5.4 mA不必写成3.5 mA~5.4 mA;(4)偏差范围:如(30±1)℃不能写成30±1℃。国际代号与缩写
Parameters and deviation range (1) Value range: 2 to 10 to write 2 to 10; 5 × 10 ~ 6 ~ 9 × 10 ~ 6 can be written as (5 ~ 9) × 10 ~ 6, but can not write 5 ~ 9 × 10 ~ 6; (2) Percentage range: 10-15% can not be written as 10-15%, (20 ± 5)% can not be written as 20 ± 5%; (3) Range with the same unit: 3.5-5.4 mA 3.5 mA ~ 5.4 mA; (4) Deviation range: Such as (30 ± 1) ℃ can not write 30 ± 1 ℃. International code and abbreviation