＞医学物理＞非线性医学＞释义 signal 信号 ＞光学＞量子光学＞释义 自发参量下转换 spontaneous parametric down conversion signal 信号 indication 指示，象征，信号 signal 信号，讯号
signal 信号；信号的
signal 信号
系统软件 操作系统 释文 signal 信号
- water lifting cylinder wheel
- water lifting irrigation
- water lifting machinery in ancient China
- water light pollution
- water lily
- water-lily family
- waterline
- water-line section
- water-logged compost
- water logging
- waterlogging
- waterlogging control calculation
- waterlogging control planning
- waterlogging design
- waterlogging disaster
- waterlogging disaster in China
- Waterloo Bridge
- water loop heat pump system
- water loss
- water loss and soil erosion of highway
- water loss rate of steam heat-supply system
- Water lotus
- water-loving
- water management
- water management in ancient China