美国科学60秒-SSS 2015-06-26
时间：2018-12-24 作者：英语课 分类：2015年Scientific American(六)月
Smart phone battery down to ten percent?Time to turn down the brightness on the screen. Right? It's a classic strategy to squize more dues from the battery, and it works. But that trick might be less effetive than you think because it turns out nearly half of the battery drain on the phone happens when the screen is not even on, so says a study presented at a meeting of the Association For Computer Machinery 1 in ?. Researchers eavesdroped on the activities of more than fifteen hundred android phones, specifically Samsang Galaxy 2 S3 and S4. And they used an app they developed called the Eastar Energy Saver. The app logged the energy drain of the phones' absent activities as they happened.And you can try out the energy saver yourself if you have an android. They found about some forty-five percent of the battery drain happened while the screen was off, and a lot of energy suck was apps updating in the background, downloading headlines and weather while you are not actively 3 using it. And different versions of the same app requires different energy supplies, for instance some versions of the facebook app were twice energy thirsty as other versions. So app version choice could slow down your battery drain. But one of the most heated energy draws, it's twelf percent of the battery was just cellular 4 paging, the pins from a sout hour every 1.2 seconds. It tells your phone if a call or text is on the way, which is ultimately the price of being connected.
- Has the machinery been put up ready for the broadcast?广播器材安装完毕了吗？
- Machinery ought to be well maintained all the time.机器应该随时注意维护。
- The earth is one of the planets in the Galaxy.地球是银河系中的星球之一。
- The company has a galaxy of talent.该公司拥有一批优秀的人才。