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1)数值范围:五至十可写为5~10;3×103~8×103,不能写成3~8×103。2)百分数范围:20%~30%不能写成20~30%。3)具有相同单位的量值范围:1.5~3.6 mA不必写成1.5 mA~3.6 mA。4)偏差范围:(25±1)℃不能写成25±1℃;(85±2)%不能写成85±2%。
1) Value range: 5 to 10 can be written as 5 ~ 10; 3 × 103 ~ 8 × 103, can not be written as 3 ~ 8 × 103.2) Percentage range: 20% ~ 30% can not be written as 20 ~ 30%. 3) Range of values with the same unit: 1.5 to 3.6 mA It is not necessary to write 1.5 mA to 3.6 mA. 4) Deviation range: (25 ± 1) ° C can not be written as 25 ± 1 ° C; (85 ± 2)% can not be written as 85 ± 2%.