| 释义 |
DEFINITIVE EXAMPLES 权威例句〔beta particle〕A high-speed electron or positron, especially one emitted in radioactive decay.β粒子：一种高速电子或质子，主要在放射衰变中释放出美国传统〔cathode ray〕One of the electrons that is emitted in a stream from a cathode-ray tube.高速电子：阴极射线管放出的电子流中的电子美国传统〔lubber line〕A line or mark on a compass or cathode-ray indicator that represents the heading of a ship or an aircraft.船向标记：罗盘或高速电子指示器的线条或标点，它们代表航船或飞机的航向美国传统 |