水的纯度定期受到检测。
水的纯度定期检测。
除了粮食产量之外，还有许多不同的方法来衡量农业表现：能源使用、环境成本、水的纯度、碳足迹和生物多样性。
There are many different ways to measure agricultural performance besides food yield: energy use, environmental costs, water purity, carbon footprint and biodiversity.
采用纯度为98%的正21烷（C21H44）作为相变材料（PCM）。
The 98% pure Heneicosane(C21H44) was used as the phase change material(PCM).
估定矿物质的纯度就常常用这种办法。
The purity of minerals is often assessed in this way, as are things like the amount of fat in milk or salt in water.
达到技术纯度要求的铝锭。
微生物发酵剂在质量和纯度方面通常差异很大。
Microbial starter cultures vary widely in quality and purity.
200克70%纯度的黑巧克力，敲成小块。
200g (7oz) Fairtrade 70 per cent dark chocolate, broken into small pieces.
加拿大同意放弃相当数量的高纯度浓缩铀。
Canada agreed to give up a significant quantity of highly enriched uranium.
这项计划就是利用激光的纯度选择性地激发铀的罕见形态。
The plan was to exploit the extraordinary purity of laser light to selectively excite uranium's rare form.
反应堆的储备箱里储备了与反应堆内同等纯度和化学构成的水。
The reserve tanks at a reactor contain the same grade of water in terms of purity and chemical composition that are normally used in the core.
大部分的食用色素必须在使用规范和纯度上符合一定的法律标准。
Most food colours must meet certain legal criteria for specifications and purity.
合成很长的烷烃并不轻松，尤其是达到实验所需要的数量和纯度。
Synthesizing very long alkanes is not trivial, especially in the quantities and purities required to put these simulations to the test.
光在光纤中损耗不是光纤制造技艺的责任，而是光纤的成分——玻璃纯度不够。
It was not the manufacturing of the fiber that was at fault, but rather that the ingredient for the fiber - the glass - was not pure enough.
目的：建立简便高效、成本低廉和安全无污染的高纯度质粒提取方法。
Objective: To develop an efficient economical and environmental method for the preparation of highly purified plasmid DNA.
美国食品与药物管理局规范了所有的婴儿配方奶粉，以确保它们的纯度和营养含量达标。
The U.S. Food and Drug Administration regulates all baby formulas to ensure purity and that they meet nutritional requirements.
勘测表明它包括至少240百万吨纯度2.3%的铜，这将使其成为一座世界级的铜矿。
Surveys suggest that it consists of at least 240m tonnes at a purity of 2.3%, which would make it a world-class deposit.
据科曼和西林萨克斯说，是因为“高纯度的肉毒毒素是目前科学已知的最致命的毒素”。
Rather, it is the fact that botulinum neurotoxin, in its pure form, is "the deadliest substance known to science," according to Coleman and Zilinskas.
该法具有反应温和、易于控制、硫酸消耗少、成本低廉和产品纯度高的优点。
This method has the advantages of easy control reaction, less consumption of sulfuric acid, cheap cost and higher purity of the product.
一直以来，诺卡尔都在不断争取更大的回收量，同时也致力于提高其废物加工成品的纯度。
Norcal is constantly striving to recycle more, and to improve the purity of the processed waste it produces.
在火星上存在冰这并不足以令人惊讶，令人惊讶的是冰的纯度之高和埋藏冰原的范围之广。
The presence of ice on Mars is not a surprise, although the purity and extent of the buried ice sheets is.
Ajax的纯度并不重要：只有少数人知道Google地图不是纯粹的Ajax应用程序。
Ajax purity is not important: Few realize that Google Maps is not purely an Ajax application.
它们最大的优点是属于合成材料，因此可大规模生产，而且它们的纯度也很容易控制。
Their biggest advantage is that they are synthetic materials and so can be produced in large amounts; also, their purity can be more easily controlled.
为达到这种感觉，我特别注意控制好明度的关系和色彩的纯度变化，从而产生一种特殊的秩序感。
In order to achieve this feeling, I specifically tried to create a special sense of order by controlling the relationship of light and the changes of color purity.
共发生过18起有案可查的高纯度浓缩铀或钚失窃或流失案例，也许还有其他尚未发现的此类案例。
There have been 18 documented cases of theft or loss of highly enriched uranium or plutonium, and perhaps others not yet discovered.
实验表明，该工艺与传统工艺相比，具有流程较短，操作简单，生产成本较低，产品纯度较高等优点。
The test results show that the new technology has the advantages of short process, simple operation, low manufacture cost and high quality of the product compared with the traditional technology.
实践表明：工艺稳定，设备结构合理，产出的宽幅薄镍箔厚度均匀、纯度高、机械性能和表面性能良好。
The results show that the process is stable, the equipment structure is reasonable, the nickel foils produced have uniform thickness, high purity and good mechanical and apparent performance.
实践表明：工艺稳定，设备结构合理，产出的宽幅薄镍箔厚度均匀、纯度高、机械性能和表面性能良好。
The results show that the process is stable, the equipment structure is reasonable, the nickel foils produced have uniform thickness, high purity and good mechanical and apparent performance.
应用推荐