The distress signal CQD originated from the signal CQ, expressing "seeking you," or "all stations." The signal CQ was commonly used among wireless operators -- and land-based telegraphers before ...

Chinese learners achieve remarkable success levels compared to their Western peers. But it’s not simply based on rote learning and passive education. The reality is more complex – and more ...

Also known as CS (commercial steel) or CQ (commercial quality). Also see deep-drawing steel, drawing steel, and extra-deep-drawing steel. If you have any comments or questions about the glossary, ...