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 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 叙述研究结果时，大多数用一般过去时，例如：Our text achieved the possibility
The graduation project aimed at constant tension release strip volume control， to explore a magnetic brake components for the implementation of the strip tension take a closed-loop volume control Programs include tension controller and magnetic powder brake drive Tension Controller is the key to the whole Volume in Strip the process of release， because too much tension will affect the fluctuations in product The requirements of tension control is put in the whole volume should be maintained in the dynamic process of constant Tension controller design， the use of operational amplifiers for the core components of the PI control Tension sensor to detect the use of strip tension， so that the value of detected tension and tension values set by the tension of the PI controller operation， the automatic adjustment of the excitation voltage magnetic brakes， so that the process of put volume to achieve constant tension Because the release of volume changes in wheel diameter 10 times in the scope of the general， it is through simulation analysis， to prove Drive Tension Controller in volume within a certain range of the Strip will still be able to better control the Through the simulation results and then determineTension Controller component Magnetic brake driver circuit design， is dedicated PWM chip， MOSFET devices for power-driven posed by single-quadrant PWM DC Design and Implementation of the volume of the release process of the better strip tension control， help improve the quality of
在2010版的word内就有这个功能。（选中要翻译的文字，点击鼠标右键弹出任务栏中就有“翻译”选项，点击“翻译”，选择英文翻译，再把光标置于要插入文本点点击插入就ok啦。另外还可以下载翻译小工具，直接进行翻译就搞定了。我帮你翻：The relationship between accounting regulation and tax law issues is a complex issue， market-oriented economic development in the course of the difference between the two will gradually have an adverse impact on economic development， how to better deal with the differences between the two has become China's economy reform process of the outstanding 。Differences in accounting standards and tax laws， and in the accounting and property tax measures taken by the different accounting and tax law， "the authenticity of the principle of" different， accounting "sound principle" and tax "payments to determine" the difference in accounting "importance of the principles "and tax" legal principle "and the accounting and tax 。differences on the" substance over form "understanding and implementation differen。Differences between accounting and tax accounting exist mainly due to the legislative goals and purposes of various tax， corporate accounting must adhere to the "accrual" basis， the enterprise must consider the International Accounting Standards， and economic Tax laws should be based on the provisions of this tax
Haiti Earthquake of 2010 March 19， 2010 A delegation of experts on human rights in Haiti prepares to testify before the Inter-American Commission on Human Rights on March The delegation will urge the Commission to formally investigate the human rights impact of post-earthquake aid in Haiti and guide donor States regarding their obligations when delivering — Institute for Justice & Democracy in Haiti March 19， 2010 In anticipation of the March 31 Donors' Conference on Haiti， over 300 NGOs from around the world sent a letter to donor states calling on them to embrace the human rights and dignity of all Haitians as the driving force behind international assistance in rebuilding H — Institute for Justice & Democracy in Haiti March 16， 2010 January’s earthquake has prompted hundreds of thousands of Haitians to leave Port-au-Prince， reversing a decades-long migration from the — NYT March 15， 2010 New Orleans Law School professor Jeanne M Woods draws on the experience of Hurricane Katrina to advocate for a "human rights approach" to aid for Haiti， which would provide Haitians with control over their own destiny and long-term support for their basic — Institute for Justice & Democracy in Haiti March 15， 2010 Successful and sustainable development projects require including the Haitian people themselves in the planning and But as Loune Viaud of Partners in Health and Monika Kalra Varma of the RFK Center for Human Rights observe， "Those who have the greatest stake in rebuilding Haiti， Haitians themselves， don’t now and never have had a real seat at the " — Institute for Justice & Democracy in Haiti March 12， 2010 Elderly Haitians find themselves distinctly vulnerable and emotionally burdened after January's — NYT March 9， 2010 In the aftermath of the earthquake， Haiti faces the added challenge of the growing number of amputees and other disabled victims of the There is a pressing need for prostheses and a rehabilitation infrastructure before it's too — Institute for Justice & Democracy in Haiti Table of Contents Overview Relief Efforts Haitian Government Response Earthquakes in the Caribbean Social Conditions in Haiti Americans Accused of Child Trafficking How to Help Complete Coverage Overview Updated: F 19， 2010 By THE NEW YORK TIMES A massive earthquake struck Haiti just before 5 on J 12， about 10 miles southwest of Port-au-Prince， the country's The quake was the worst in the region in more than 200 A study by the Inter-American Development Bank estimates that the cost could be between $2 billion to $2 billion， based on a death toll from 200，000 to 250，
