As the story goes one Friday afternoon Alfred was testing a new alloy of aluminium, he had developed containing about 4 percent copper.
一杯米饭含有大约200卡路里的热量,它也是一种碳水化合物的良好来源,它有助于增加体重。
A cup of rice contains about 200 calories, and it is also a good source of carbohydrates, which contribute to weight gain.
从技术角度来看,这种阻尼器是很差的解决方案,因为油中含有大约10%的空气。
From a technical point of view, this type of damper is a poor solution, because the oil contains approximately 10% air.
它们还含有大约10%的在戊糖磷酸途径中两种酶全部活动,这对能量代谢很重要。
They also contain approximately 10% of the total activity of two enzymes in the pentose phosphate pathway, which is important for energy metabolism.
在白血病细胞的实验中,研究人员发现他们可以得到准确结果的微小液滴血液含有大约1000个癌细胞。
In the experiments with leukemia cells, the researchers showed they could get accurate results with a tiny droplet of blood containing about 1,000 cancer cells.
选择的早餐谷物最好每100克含有大约10克的纤维。
Breakfast cereals of your choice should preferably contain about 10 grams of fiber per 100 grams.
它因葡萄酒而异,但红葡萄酒含有大约3微克(约百万分之一克的百万分之一)的白藜芦醇每瓶。
It varies by wine, but red wine contains about 3 micrograms(about 3 millionths of a gram) of resveratrol per bottle.
四盎司的肉,鸡肉或鱼肉含有大约28克的蛋白质。
A three-ounce piece of beef, chicken, or fish contains approximately 25 grams of protein.
根据美国环保署(EPA)的数据,显示器可能含有大约1.8千克(4磅)的铅。
According to the U.S. Environmental Protection Agency(EPA), monitors can contain approximately 4 pounds(1.8 kg) of lead.
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