A period, which separates the field width from the precision.
小数点, 用于将字段宽度和精度分开.
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A number that specifies the minimum field width.
数,用于指定最小字段宽度.
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There is surprisingly little pincushion distortion in the EII considering the field width.
这几乎和FL一样,比E要 好一点.
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