个人练习
1. This partner, it seems, has a mass 10 or 20 times greater than the sun---yet we can’t see it.
2. Using the method, one machine part had its working life increased by 14 times.
3. The energy available in a wind stream is proportional to the cube of its speed, which means that doubling the wind speed increases the available energy by a factor of eight.
4. The natural disaster has caused the output of the crops to decrease three times.
5. According to the report, the new type of cells would reduce the cost of producing solar power by a factor of 10. 6. The error probability of the equipment was reduced by 2.5 times through technical innovation.
7. Scientists said the expansion next year will permit the system to deal with 1000 million pieces of information each second, four times more than now.
1。这个合作伙伴,似乎有一个质量的10到20倍太阳————,我们看不见它。
2。使用方法,一台机器的一部分有其工作寿命增加了14倍。
3。中可用的能源风力流速度成正比,这意味着加倍风速增加可用的能源八倍。
4。自然灾害导致农作物的产量减少三次。
5。根据这份报告,新类型的细胞将降低生产成本的太阳能的10倍。 6。该设备误差概率降低了通过技术创新的2.5倍。 7。科学家说,明年扩张将允许系统每秒处理10亿件的信息,比现在的四倍。
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