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单词 counter
释义 counter
Any device for detecting and counting objects or events, often incident charged particles or photons. The latter devices usually work by allowing the particle to cause ionization, which creates a current or voltage pulse. The pulses are then counted electronically. See Cerenkov counter; crystal counter; Geiger counter; proportional counter; scintillation counter; spark chamber. These names are often applied merely to the actual detectors; the ancillary counting mechanism is then called a scaler
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更新时间:2025/6/23 13:02:54