研究人员发现一种“电子鼻子”能够从肺癌或头颈部癌症病人的呼吸中识别癌症的化学信号。
Researchers found an "electronic nose" was able to identify chemical signals of cancer in the breath of patients with lung or head and neck cancer.
研究者所分析的咖啡容量从23毫升至70毫升不等，他们的发现已发表于皇家化学学会的《食品与功能》期刊。
Researchers analysed coffees ranging in cup size from 23ml to 70ml. Their findings are published in the Royal Society of Chemistry's Food and Function journal.
这种仪器直至今天仍然广泛使用，它可以从土壤、水或空气中发现的数以万计的化学物中嗅到一部分（需要的）的东西。
Still widely used, this electronic nose is able to sniff out a few parts per trillion of chemicals found in the soil, water or air.
美联称，在过去一年中，从牙膏到奶粉，由于在很多产品中发现了大量化学物及添加剂，中国产品的声誉遭受了严重打击。
The reputation of Chinese products has come under fire in the past year after high levels of chemicals and additives were found in goods ranging from toothpaste to milk powder, AP said.
然后他们从细菌中提取出dna，利用高解析二次离子质谱技术分析了其中的化学组成，发现DNA中也含有砷。
They also separated out the DNA from the bacteria and analyzed its composition using a technique called high-resolution secondary ion mass spectrometry; the isolated DNA contained arsenic.
科学家们从2002年就发现一些食品含有这种化学物质，并已强烈要求食品工业减少这种化学物质的含量。
Scientists have known since 2002 that the chemical exists in certain products and have urged the food industry to reduce levels.
研究人员通过研究宇航员从月球上带回的岩石发现月球上那少得可怜的水其化学成分跟地球上的水不同的。
Researchers studying rocks brought back by astronauts have found that the moon's scarce water has a different chemical signature than Earth water.
从世界卫生组织在哥伦比亚花场中发现有毒化学物的报告，到某项在墨西哥温室中发现DDT的研究的报告，类似的几份报告引起了人们对花卉杀虫剂的关注。
Several reports have raised concern over pesticides, from the World Health Organisation highlighting toxic chemicals used on Colombian flower farms to one study finding DDT in Mexican hothouses.
通过研究宇航员从月球上带回来的岩石标本，科学家们发现月球上稀少的水资源与地球水资源的化学成分并不相符。
Researchers studying rocks brought back by astronauts have found that the moon's scarce water has a different chemical signature than Earth water.
事实上已经有先例摆在我们的面前了，在1909年，一位名叫Fritz Haber的德国化学家发现了一种生产氨的方法：将氮(从空气中分离得到)和氢结合在一起。
Indeed, there is a telling historical precedent. In 1909 Fritz Haber, a German chemist, discovered a new way to combine nitrogen from the air with hydrogen to produce ammonia.
化学的一个分科就是要研究发现利用从农产品中提取的原料来创造新的产品，它被称为农业化学。
The branch of chemistry that studies and finds ways to use raw materials from farm products to make industrial products is called chemurgy.
已经发现溶剂浸渍树脂可以广泛用于很多过程，比如化学分析、工艺分离和从废水中除去金属离子等。
It has been found that SIR can be extensively used in many processings, such as chemical analysis, technological separations and the removal of metallic ions from waste water.
研究人员从热带一种薄荷类植物中发现的化学物质对缺乏阳光照射的皮革以及实验室隔绝阳光的“白皮”鼠都有作用。
Researchers have found a chemical from a tropical mint plant that works both as a sunless tanner and as a solar shield in fair-skinned mice.
研究人员从热带一种薄荷类植物中发现的化学物质对缺乏阳光照射的皮革以及实验室隔绝阳光的“白皮”鼠都有作用。
Researchers have found a chemical from a tropical mint plant that works both as a sunless tanner and as a solar shield in fair-skinned mice.
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