【摘要】 为了使实验能够获得良好的效果,实验前必须进行预习。阅读实验教材、教科书和参考资料中的有关内容,明确实验目的,了解实验内客、步骤、操作方法、注意事项。在预习的基础上,写好预习笔记。更多还原

【Abstract】 Plenty preparation must be done before experiment in order to obtain a satisfactory result. It includes reading experimental textbook and reference, understanding experimental goal definitely, comprehending experimental content, steps, operating methods and notices. On the basis of them, the preparing notes can be completed.更多还原