托福听力课外资料练习：科学美国人60秒太阳能电池板自动除尘相关内容分享

2017年07月04日15:36 来源：小站整理: 参与（0）阅读（2495）

摘要：托福听力的备考十分的重要，那么你应该如何练习呢?在备考过程中除了一些真题之外，一些常用的课外资料也是十分重要的。小编经常用到的就是科学美国人60秒，下面编在这里为为大家整理了科学美国人60秒：太阳能电池板自动除尘相关的内容分享，希望对大家有帮助。

在托福听力考试的备考过程中，科学美国人60秒相信大家一定用得比较多，那么大家平时是如何利用这个课外资料的呢?这里小编整理了科学美国人60秒：太阳能电池板自动除尘相关的内容分享，大家一起来学习一下吧。

科学美国人60秒英文文本

Imagine giant fields filled with photovoltaic solar panels, soaking up rays. The best spots to put such panels are obviously sunny, with little rain. But such places often come with lots of dust. And the panels have to stay dust-free: just a seventh of an ounce of dust per square yard of panel can decrease solar power conversion by 40 percent. And panels in Arizona might get covered with four times that much dust each month.

Cleaning the panels conventionally uses precious water. So researchers are turning to dust-cleaning technology developed for one of the driest, dustiest locations possible: Mars. The work was reported at the national meeting of the American Chemical Society. [Malay Mazumder et al.]

An electrically-sensitive transparent material is deposited on glass or a plastic sheet that covers the panel. Sensors monitor the dust levels.

Once the dust reaches a specified level, the system reacts and produces a charge, with electricity generated by the panel.

The charge creates a wave over the material’s surface that physically lifts the dust and tosses it over the edges. The system gets about 90 percent of the dust in a couple of minutes. So the panels can go back to soaking up rays.

—Cynthia Graber

科学美国人60秒中文翻译：

自动除尘的太阳能电池板

太阳能电池板能通过自发电脉冲震落其灰尘，以确保最大限度的获得光照。Cynthia Graber 报道。

想象一块儿布满光电转换太阳能电池板，吸收着光能的巨大场地。放置这些电池板的最好场所无疑应该是阳光充足、降雨稀少的地方。但此类地点通常有着大量的灰尘，而电池板必须远离灰尘：电池板上每个正方形区块只要有七分之一盎司的灰尘，就能减少40%的太阳能转化率。