论文部分内容阅读
不少人以为微波炉是七十年代研制出来的新产品,其实早在第二次世界大战期间,当人们在从事雷达研制的时候,微波炉就已在孕育之中了。1947年美国(雷声公司)首先制成微波炉;1955年西欧制成微波炉;1959年日本从美国引进微波炉,1961年日本(东芝公司)制成微波炉;从此,家用微波炉打开了一个新的局面。据报导,目前世界上拥有2000万台微波炉,其分布情况,年销售量和家庭普及率列于表1中。有人估计在今后五至十年内,世界上
Many people think that microwave ovens were new products developed in the 1970s. In fact, microwave ovens were already under way as early as during the Second World War when people engaged in radar development. In 1947 the United States (Raytheon) first made of microwave ovens; Western Europe in 1955 made of microwave ovens; Japan 1959 introduced microwave ovens from the United States, 1961 Japan (Toshiba) made of microwave ovens; Since then, domestic microwave ovens opened a new situation. It is reported that there are currently 20 million microwave ovens in the world. The distribution, annual sales and household penetration are listed in Table 1. It is estimated that in the next five to ten years in the world