dy

★★★★中高频词

d开头的单词英语单词大全

中文释义

abbr.day 天，duty 义务，dynamotor 电动发电机，delivery 递送

dy的英语例句

This definition of dy presumes some expression for the subtangent.

dy的这个定义假定次切线的一些表达式.
With mixed feelings he said good - bye to Dy . Archibald.

他怀着矛盾的心情告别了阿奇博尔德大夫.
The infinitely small " dx " and " dy " were sometimes described as vanishing or incipient quantities.

有时候把无穷小量dx和 dy 描述成正在消失的或者刚出现的量.