D — A digit (from 0 to 9).

d—数字(0到9)。

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The system has accurate measurement, digit display, A/D change, warning and printing functions, and it has high steady function.

该系统具有精确测量、数字显示、A/D转换、报警和打印等功能，并具有工作稳定性能好等优点。

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Port of Entry Use Schedule D--- Classification of U. S. Customs Districts and Ports for U. S. Foreign Trade Statistics—a four digit code i. e. New York City, NY 1001.

报关港的填写依照表格D—参考美国外贸统计的港口和海关分类区的4位数字代码表。 例如：纽约城就填写NY1001。

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Percent D is for a digit, like a number or-- one or more digits.

d代表以数字的形式输出，比如一个数字或者--1或更大的数。

哈佛公开课 - 计算机科学课程节选

You'd think that with double-digit industry sales growth in the first half of this year, China's richest retailers would have an easy time increasing their wealth from a year earlier on the new Forbes China Rich List.

FORBES: Zhou Chengjian

Then he'd be stuck in charge of a regional utility with single-digit earnings growth.

FORBES: Trading places