early-adopter theory
... Durable goods 耐用品 Early-adopter theory 早期采用理论 Economic value to the customer：EVC 顾客经济价值 ...
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与早期雷达采用距离微分方法测速相比，基于脉冲多普勒理论的雷达测速技术具有实时性好、精度高等优点。
Comparing with the differential range method that early radar adoptive for measuring velocity, the radar, which based on Pulse-Doppler theory, has the better real time capability and high precision.
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