| 单词 | Geiger counter |
| 释义 | Geiger counter an instrument for detecting ionizing radiations, consisting of a gas-filled tube in which electric-current pulses are produced when the gas is ionized by radiation, and of a device to register these pulses: used chiefly to measure radioactivity. Also called Geiger-Müller counter. [1920-25; named after H. GEIGER] |
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