英文句子,说微波炉和电脑两项发明有什么好处,给人类带来了什么。_百度...

发布网友发布时间：2024-04-09 01:54

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热心网友时间：2024-04-18 12:41

Buy microwave oven needs attention:The 1 single microwave type and combination type microwave oven distinction: combination microwave ovens generally refers to a hair ' heat pipe or a light tube is heated with microwave oven, generally combined than single microwave oven price expensive, when the choose and buy should take into account the barbecue function in their family life in the frequency of use and dependence have after all how old, it with your habits, for cooking time and energy as well as your consumption level whether suit.2 Mechanical and electronic control system means to distinguish: ' ' mechanical control system has the advantages of simple operation, clear, good product reliability, is suitable for the elderly; electronic control ' system has the advantage of being able to accurately control ' system heating time heating, according to the different food, a variety of programs to choose from, high-grade products may there are some other additional features, disadvantage is the key, complex operation is not easy to master.Products: 3 volume of the common market of microwave oven cavity volume generally have 17L, 18L, 20L, 23L, 28L, 30L and other specifications, for ' manufacturer can ' with the same size of the furnace cavity developed different models and the output power of microwave oven. Theoretically, the microwave output power under the same conditions, the furnace chamber is bigger, the heating uniformity is better, but the heating efficiency is low, but the difference in use is almost imperceptible.In other conditions remain unchanged, the furnace chamber is bigger, the price will be higher too. In general, the microwave oven cavity volume and family use among a population of no direct corresponding relations. For the average family, can be in the range of 20 ~ 30L choice, better furnace cavity volume is about 23L. When the choose and buy the life habits, diet structure of microwave oven, dependence, housing conditions and economic ability to consider.

热心网友时间：2024-04-18 12:37

Albert Einstein (March 14, 1879 – April 18, 1955) was a German-born theoretical physicist who is best known for his theory of relativity and specifically mass-energy equivalence, E = mc2. He was awarded the 1921 Nobel Prize in Physics "for his services to Theoretical Physics, and especially for his discovery of the law of the photoelectric effect."

Einstein's many contributions to physics include his special theory of relativity, which reconciled mechanics with electromagnetism, and his general theory of relativity which extended the principle of relativity to non-uniform motion, creating a new theory of gravitation. His other contributions include relativistic cosmology, capillary action, critical opalescence, classical problems of statistical mechanics and their application to quantum theory, an explanation of the Brownian movement of molecules, atomic transition probabilities, the quantum theory of a monatomic gas, thermal properties of light with low radiation density (which laid the foundation for the photon theory), a theory of radiation including stimulated emission, the conception of a unified field theory, and the geometrization of physics.

Works by Albert Einstein include more than fifty scientific papers and also non-scientific books. In 1999 Einstein was named Time magazine's "Person of the Century", and a poll of prominent physicists named him the greatest physicist of all time.[4] In popular culture the name "Einstein" has become synonymous with genius.

热心网友时间：2024-04-18 12:39

People have been greatly benefited from the invention of the Microwave Oven and the Computer. The former makes it convenient for people to cook or heat food the soonest while the latter enables people to communicate with outside world , search for information and enjoy online games with the simple click of a mouse.
With the development of science and technology, people's quality of life is keep on improving.