里面包含34套奖学金答辩模板，方便使用者在短时间里做出想要的PPT。 (2022-05-22, WORD, 278992KB, 下载13次)
http://www.pudn.com/Download/item/id/1653188400610413.html
黄金（Gold）即金，化学元素符号Au，是一种软的，金黄色的，抗腐蚀的贵金属。金是最稀有、最珍贵的金属之一。
Gold (Gold), the gold, the chemical element symbol Au, is a soft, golden, precious metal anti-corrosion. Gold is one of the rarest, most precious metal. (2013-01-01, WORD, 182KB, 下载2次)
555时基集成电路的应用
我们知道，555电路在应用和工作方式上一般可归纳为三类。每类工作方式又有很多个不同的电路。
在实际应用中，除了单一品种的电路外，还可组合出很多不同电路，如：多个单稳、多个双稳，双稳和无稳的组合等。这样一来，电路变的更加复杂。为了便于我们分析和识别电路，更好的理解555电路，这里我们按555电路的结构特点进行分类和归纳，把555电路分为3大类、8种、共18个单元电路。每个电路除画出它的标准图形，指出他们的结构特点或识别方法外，还给出了计算公式和他们的用途。下面将分别介绍这三类电路。
We know that 555 electric circuits at applied and work method up can induce to three generally.The each work method has a lot of different electric circuits again.
In actual application, in addition to the electric circuit of the one species, can also combine a lot of different electric circuit, such as:Many single steady and several steady, the double is steady and without steady combination etc..By so doing, the electric circuit change more complicated.For the sake of easy to we are analytical and identify the electric circuit, better comprehend 555 electric circuits, here we carry on the classification and induce according to 555 structure characteristicses of the electric circuits, ising divided into the 3 major type to 555 electric circuits,8 kinds of, total 18 unit electric circuits.Each
(2009-02-01, WORD, 59KB, 下载7次)
史蒂芬• 霍金写的，很有名的一本书。
# 8226, Stephen Hawking wrote, in a famous book. (2005-10-13, WORD, 455KB, 下载9次)