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tec1 24v致冷4a片大功率制冷40mm55w*温差-半导体片医疗1990440片
片片半导体大功率tec1-40mm*致冷55w医疗24v片制冷4a温差1990440
19903制冷半导体40mm19901/*/1990524v/199012/-/tec1片1990440
1990540 19901224v19901-tec1*/1990440制冷//电压19902片19903//
1990440/电压/制冷/40/片24vtec1-199021990519903 19901/*199012
制冷/*片//1990440mmtec1//19901-19901224v19903半导体1990540
