精品偷拍一区二区三区,亚洲精品永久 码,亚洲综合日韩精品欧美国产,亚洲国产日韩a在线亚洲

  • <center id="usuqs"></center>
  • 
    
  • 英語翻譯

    英語翻譯
    In physics,maths or other branches of natural science,you'll find many symbols,laws (定律;定理) and formulas (公式). Such symbols,laws and formulas may be the scientists' language. With it a scientist can express his thoughts in a more exact and clear way.
    Take chemistry for example. The scientist always uses symbols to represent elements (元素). He uses the first letter of the name,capitalized,as the symbol. For example,the symbol for hydrogen (氫) is H,for oxygen (氧)is O,for nitrogen(氮) is N. With such symbols,he can form the formulas(分子式) of compounds (化合物). As we know,the formula for water is H2O.
    Sometimes,words in everyday use will change their meaning when scientists use them. One of the most interesting examples is the word “work.” In physics,“to do work” means to move something. If you push against something but do not move it,you have done no work. Here the word “work” is quite different in meaning from the same word in the saying “to do a good day's work.”
    There are many ways for scientists to express their thoughts besides writing,such as by designs or through data (數(shù)據(jù)).
    The scientists'language is most important to scientific work. It is the ABC of science. Without it you cannot work at science,even a production plan cannot be carried out. And you cannot build a ship,a house,or a machine-tool (機(jī)床) if you do not know how to make design or how to read it.
    其他人氣:339 ℃時(shí)間:2020-01-29 18:42:51
    優(yōu)質(zhì)解答
    在物理,數(shù)學(xué)或其他自然科學(xué)的分枝上,你會(huì)發(fā)現(xiàn)許多符號,定律和公式.這些符號,定律和公式可以說是科學(xué)家們的語言.有了他們,科學(xué)家們可以更準(zhǔn)確清晰地表達(dá)他們的思想.舉化學(xué)為例,科學(xué)家們總是用符號表示元素,他把這元素...
    我來回答
    類似推薦
    請使用1024x768 IE6.0或更高版本瀏覽器瀏覽本站點(diǎn),以保證最佳閱讀效果。本頁提供作業(yè)小助手,一起搜作業(yè)以及作業(yè)好幫手最新版!
    版權(quán)所有 CopyRight © 2012-2024 作業(yè)小助手 All Rights Reserved. 手機(jī)版