无需标准溶液的滴定计算分析能同时求出滴定剂与被测物质浓度。
The calculating analysis of titration without standard solution is a method that can be used to determine the concentration of substance titrated and titrant at the same time.
本发明描述了一种准确测量过滤器外壳内的物质浓度的系统和方法。
The present invention describes a system and method for accurately measuring the concentration of a substance within a filter housing.
污染物质浓度的空间变化取决于这一复杂流动的时均特性和紊动特性。
The concentration of pollutant in space depends on the characteristics of time averaged and turbulent flow.
研究者在每个参试者嘴巴前30厘米区域采集空气样本并测量颗粒物质浓度。
Air in the breathing zone (about 30cm from the mouth) was sampled for each trip to measure PM concentrations.
身体大多数器官的功能是适应于维持此内环境中物理条件和溶解物质浓度的恒定。
The functions of most of the organs of the body are geared toward maintaining constant physical conditions and concentrations of dissolved substances in this internal environment.
依据色阶数据制成工作曲线，再依水样的吸光值从工作曲线找出对应的物质浓度。
First, a working curve must be made according to the colour gradation data and then the density of the substances is found out with the help of the extinction value of the water samples on it.
这里需要提醒那些在化学课上打瞌睡的人，滴定法是计算溶液中物质浓度的一种方法。
Titration, to remind those who dozed through their chemistry lessons, is a way of working out the concentration of a substance in a solution.
如果他的理论正确，通过变包装的内层成分来控制令人不悦化学物质浓度，对于葡萄酒业而言是一个好方法。
If his theory is correct, fiddling with the composition of box interiors could be a good way for the wine industry to control the concentration of unpleasant chemicals.
然而到了早上11点30分，奇怪的是核物质浓度大幅下降到了6毫希每小时，工作人员各自回到了岗位上。
By 11.30am however the level dropped dramatically, and mysteriously, to about 6msv per hour and the workers were back to the job.
在750人被命令离开、剩下的50人回到了他们令人绝望的工作的一个小时之后，工作站的核物质浓度似乎下降了下来。
After being called away, the remaining 50 returned to their desperate tasks only one hour later, as the intensity of radiation at their workstations subsided somewhat.
幸运的是，生物进化赋予哺乳动物通过嗅觉对MHC进行分辨的能力，因为MHC的不同导致了化学物质浓度的差异，而这时可以被嗅觉探测到的。
Fortunately, then, evolution has equipped mammals with the ability to detect by smell chemicals whose concentrations vary with differences in the MHC of the producer.
铱存在于陨石和火山物质中，但在火山物质中同时包含高浓度的镍和铬。
Iridium occurs in meteorites and volcanic material, but in the latter case it is accompanied by elevated levels of nickel and chromium.
虽然大多数植物不能在这种土壤中生存，但某些植物有能力忍受高浓度的这类矿物质。
Although most plants cannot survive in these soils, certain plants have the ability to tolerate high levels of these minerals.
尽管月球上水和其他物质的浓度和分布还需进一步分析，但可以放心地说，凯布斯陨石坑中存在水。
The concentration and distribution of water and other substances requires further analysis, but it is safe to say Cabeus holds water.
当物质是很少量浓度的时候，我们可以用亨利定律。
But something which in a very small concentration, then Henry's law is going to apply.
SEPA的放射性物质主任詹姆斯 格梅尔说，”检测出来的放射性碘同位素浓度极低，不对公众和环境构成影响.
Dr James Gemmill, Sepa's radioactive substances manager, said: "The concentration of iodine detected is extremely low and is not of concern for the public or the environment.
该图利用美宇航局Aura/OMI卫星传感器获取的二氧化硫浓度数据，显示了可以造成飞机发动机故障的烟尘、火山灰等物质。
Using sulfur dioxide concentration data from the NASA Aura/ OMI satellite sensor, it shows smoke, ash, and other components that can cause aircraft jet engines to fail.
如果没有20年前作出的那些决定，那么至2050年，大气中臭氧消耗物质的浓度会增加到原来的10倍。
Without the decisions taken 20 years ago, atmospheric levels of ozone-depleting substances would have increased tenfold by 2050.
如果希望某种技术在商业利用方面切实可行，首先在物料的预处理方面要求所得到的中间产品必须是容易发酵的糖份，产量高，浓度也较高，而且技术的实施成本还不能过高，还有生产过程中更不能使用有毒物质，不可以耗费太多能源，最后，所生产出来的草料油在价格方面必须能够与传统汽油一争高下。
They should not use toxic materials or require too much energy input to work. They must also be able to produce grassoline at a price that can compete with gasoline.
研究发现二手烟中含有高浓度的上述有害物质。
High concentrations of many of these chemicals are found in secondhand smoke.
人类可以闻到微小浓度的物质，哪怕浓度小到一万亿分之二。
We have an ability to smell incredibly small concentrations, down to as little as two parts per trillion.
这写着在平衡状态一种物质，的浓度变化等于零，我们一会儿也会把它用作一种近似，当我们学习更复杂的机理的时候。
Writing at equilibrium that the change in the concentration of one of the species is equal to zero, we're going to use that as an approximation also later, when we get to more complicated mechanisms.
以前，人们一直以为是大气中二氧化碳为海洋施了肥，因为二氧化碳浓度的增加导致气候变化，使更多营养物质流入海洋。
Previously, it has been held that carbon dioxide in the atmosphere was the cause of the ocean being fertilised, as rising levels brought climatic changes, washing more nutrients into the sea.
纳米二氧化钛被用作许多食品和化妆品的增白剂，试验已经证明当试验动物暴露在高浓度此种物质的情况下会产生疾病。
Nano-titanium dioxide, which is used as a whitening agent in many food and cosmetic products, has been proven to cause disease in test animals that have been exposed to high doses.
而且蜜蜂能觉察到空气中浓度仅万亿分之一单位的特定化学物质。
The bees can detect the target chemicals in the air in concentrations as low as a few parts per trillion.
走浓缩这条路，从20%到可用作造核弹的90%的浓缩所要花费的努力甚至比艰苦地做出开始的3.5%浓度的反应堆物质要少的多。 在纳坦兹，伊朗依然在生产3.5%浓度的浓缩铀。
In the way enrichment works, getting from 20% to bomb-usable 90% enrichment takes a lot less effort even than churning out the initial 3.5% reactor-grade stuff still piling up at Natanz.
走浓缩这条路，从20%到可用作造核弹的90%的浓缩所要花费的努力甚至比艰苦地做出开始的3.5%浓度的反应堆物质要少的多。 在纳坦兹，伊朗依然在生产3.5%浓度的浓缩铀。
In the way enrichment works, getting from 20% to bomb-usable 90% enrichment takes a lot less effort even than churning out the initial 3.5% reactor-grade stuff still piling up at Natanz.
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