那枚炸弹必须在百万分之一秒内爆炸。
The bomb must explode within less than a millionth of a second.
为促成一次核爆炸，临界质量必须在一百万分之一秒内聚集在一起。
In order to make a nuclear explosion, the critical mass must come together within a fraction of a millionth of a second.
从重量为百万分之一克的样品中提取有关行星宏观组成的信息是一个极为有趣的科学尝试实例。
Extracting information about the large-scale composition of a planet from a sample weighing a millionth of a gram was a fascinating example of scientific endeavour.
那不是它的百万分之一！
纳米晶体，也被称为量子点，是一种直径只有百万分之一毫米的半导体粒子。
Nanocrystals, also known as quantum dots, are semiconducting particles with a diameter of a few millionths of a millimeter.
虽然大多数致病突变在人类中发现的概率为千分之一到百万分之一，但基础突变发生的几率可能高得多。
While most disease-causing mutated are found in humans at a rate of one in a few thousand to one in a few million people, founder mutation can occur at much higher rates.
我相信那是百万分之一的机率。
最后，双面打印速度很慢大约3 百万分之。
血液中CO普通含量相当低——零至百万分之八。
A normal amount of CO in your blood is extremely low — zero to eight parts per million.
意味着,二者之间的差别仅是,百万分之三分之一。
That means the difference between the two is only one-third % of a millionth of a percent.
水库的建造使得地球的转速比起四十年前快了每天百万分之八秒！
Reservoirs have made each day eight millionths of a second faster than it was forty years ago!
而不需要去调整大概仅百万分之1.26秒(1.26毫秒)的时间。
You don't have to adjust your schedule by much: about 1.26 millionths of a second ought to do it.
此参数指定一个最高和最低频率偏差，以百分比表示或百万分之的。
This parameter is specified with a maximum and minimum frequency deviation, expressed in percent or parts per million.
希望将大气中二氧化碳含量由百万分之380降低到百万分之350。
Want concentration of CO2 in atmosphere lowered from 380 to 350 parts per million.
苹果ipad不是为那些千分之十的人制造的，而是而是百万分之十。
It doesn’t build for the tens of thousands; it builds for the tens of millions.
在不到一个半世纪后，我们把大气中的二氧化碳猛增到百万分之390。
In the scant century and a half since then, we've bumped atmospheric carbon dioxide up to 390 PPM.
患癌风险估计：一次吃吃掉两磅未清洗污染花椰菜大约的概率为百万分之二。
The estimated increase in cancer risk of eating two unwashed pounds is about two chances in a million.
全球的二氧化碳排放量已达到百万分之380超过了工业时代的百万分之280。
Global carbon levels are currently at 380 parts per million compared to 280 before the Industrial Revolution.
亚奥理事会发现在一碟液体中1，4 -二恶烷的含量高达百万分之97.1。
The amounts the OCA found were as high as 97.1 parts per million, in a dish liquid.
目前在北极地区甲烷浓度平均为大约百万分之1.85，科学家们说，这是40万年中的最高水平。
Current methane concentrations in the Arctic average about 1.85 parts per million, the scientists said, the highest in 400,000 years.
通常在10年前，如果一个天文学家告诉你，他的测量精度是百万分之五，你只会哈哈大笑。
Normally when or 10 years ago, if an astronomer told you that he was making measurements to a precision of five parts in a million, you would just laugh.
最有危险性的颗粒是最小的，它们直径为一米的百万分之2.5或更少(简称PM 2.5)。
The most hazardous particles are the tiniest, those with a diameter of 2.5 millionths of a meter or less (called PM2.5 for short).
2007年有大约692名乘客丧生，而去年这一数字降到了502，空难死亡率约为百万分之0.13。
Some 692 passengers lost their lives in 2007, but this fell to 502 last year, a rate of 0.13 deaths for every million passengers carried.
很多科学家得出结论，一旦二氧化碳的排放量超过百万分之450，那么灾难性的影响将会显现。
Most scientists conclude that catastrophic effects will begin to be felt once those levels pass 450.
如果二氧化碳的排放量达到百万分之800-1000，正如人们猜测的，那将是最坏的情况。
If the Earth reaches 800-1000 parts per million, as the worst-case scenarios predict, it’s really anybody’s guess.
然而，这些亚致死的症状并没有观察到鱼种虹鳟鱼暴露在平均浓度百万分之22.3的F-后8天。
However, these sublethal symptoms were not observed in fingerlings of rainbow trout exposed to a mean concentration of 22.3 ppm F- after 8 days.
放入了一个一便士大小的能量池，这些甲虫在2周实验期内产生了20微瓦（一瓦特的百万分之二十）。
Fitted with a fuel cell about the size of a penny, the bionic bugs were able to generate over 20 microwatts (20 millionths of a watt) during a two-week trial.
放入了一个一便士大小的能量池，这些甲虫在2周实验期内产生了20微瓦（一瓦特的百万分之二十）。
Fitted with a fuel cell about the size of a penny, the bionic bugs were able to generate over 20 microwatts (20 millionths of a watt) during a two-week trial.
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