挑剔宝宝
写论文摘要时以一般现在时为主。
介绍背景知识时，要用一般现在时，例如：
Speech recognition is the task of converting speech into text.
叙述研究现状时，也可以用一般现在时，例如：
This essay is to analyse how the era influences corporate cultures, and to give suggestions on the building of corporate cultures.
叙述研究结果时，大多数用一般过去时，例如：
Our text achieved the possibility above.
童鞋哈哈
In this paper, ordinary differential equations courses, to explore how to realize "high-early binding", and mathematics in secondary schools in the basis of ordinary differential equations, as well as ordinary differential equations of the guiding role of mathematics in secondary schools to do some discussion, for systems of ordinary differential equations of high under the mathematical point of view to provide some secondary words, Ordinary Differential Equations; School Mathematics; combination of high early
论文摘要是对论文的内容不加注释和评论的简短陈述，要求扼要地说明研究工作的目的、研究方法和最终结论等，重点是结论，是一篇具有独立性和完整性的短文，根据内容的不同，摘要可分为以下三大类：报道性摘要、指示性摘要和报道指示性摘要。
中文名
论文摘要
外文名
abstract
字 数
一般为正文字数10%左右
语 言
一般中文与英文并存
主要组成
目的 方法 结果 结论
超级飞侠包警长
论文用到的专业性词汇比较多，很多时候在写英文的时候可能会感到困难，我用过的是这个，你看一下吧。
第一步，在首页三大板块中点击【文档翻译】。
第二步，点击【选择文件】，从电脑中选中文件（注意这篇文档里只放论文摘要部分），点击【打开】。
第三步，文件上传之后，看到翻译语种选择，设置为【简体中文】转换【英语】，点击右下角【立即翻译】。
第四步，等到翻译完成，屏幕上会跳出温馨提示，点击【查看文件】，就能找到保存在电脑上已经翻译成英文的论文摘要了。
liyaze0102
From the 1930s until the 1970s, in the world in succession in appeared many serious pollution incident, cause acute poisoning death, people are very serious consequences, so people to sudden accident harm caused by the evaluation of environmental problems and concerns rise gradually. Taking fuxin row mountain building as an example, the paper gold deposits potential risk risk , from the material and project risk potential risk to the two aspects of gold on risk identification, then USES ahp to those of groundwater pollution cyanide wastewater is the largest credible accident. Finally using frequency analysis data and event tree analysis method of combining the most credible accident to quantitative analysis. Because of this, the study of bearing cyanide wastewater in the rainy season and influence to environment, water leakage in rainy season leaching of groundwater. But after all is poisonous substances, cyanide and evaluation process exists many uncertain factors, thus reduce the content of cyanide tailings bread, strengthening open pit mining pit and the prevention measures in dry yard to use fixed number of year of tailings immediately after covering afforest is very necessary.
（爱词霸英语）这个翻译网站挺好。
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