理学 结构化分析 释 dataflow diagram; DFD 数据流图 结构化分析方法中所用的一种图。由数据流、加工、文件、数据源和数据终点等主要成分构成，用来描述系统中数据如何流动、处理及存储。
软件工程 释文 dataflow diagram, DFD 数据流图
- horizontal transit circle
- horizontal transit instrument
- horizontal vector
- horizontal-vertical illusion
- horizontal well completion
- horizontal well open-hole gravel pack
- horizontal well penetrating-layer fracturing
- horizontal well perforated casing completion
- horizontal well perforation
- horizontal wood drilling machine safety
- horizontal working areas
- horizontal zenith telescope
- horizontal zonality of vegetation in China
- horizon tracking
- Hormander
- Hormander operator
- Hormander's sum of squares
- hormonal contraception
- hormonal feedback control of the hypothalamus-adenohypophysis-target gland axis
- hormonal regulation of ovarian function
- hormonal regulation of plant senescence
- hormone
- hormone and behavior
- hormone and factor
- hormone hypersensitivity syndrome