冰箱的由來(the-origin-of-refrigerators)-考研英語作文(編輯修改稿)
2025-04-03 21:41 本頁面
【文章內(nèi)容簡介】 frigerate freight cars, it also came into household use. even before 1880,half of the ice sold in new york, philadelphia, and baltimore, and onethird of that sold in boston and chicago, went to families for their own use. this had bee possible because a new household convenience, the icebox, a precursor of the modern refrigerator, had been an efficient icebox was not as easy as we might now suppose. in the early nineteenth century, the knowledge of the physics of heat, which was essential to a science of refrigeration, was rudimentar
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