A colorless gas that is present in the air in trace amounts.
空气中存在的无色微量气体。
Sucrose content was present at trace amounts in most cultivars.
在大多数品种果实中，蔗糖含量微量。
This element occurs naturally in trace amounts in the environment.
这自然会出现的微量元素在环境中的数额。
Certain other elements are needed in trace amounts for cell metabolism.
细胞的新陈代谢还需某些其它的微量元素。
You don't have to worry, we're definitely talking about trace, trace amounts.
但你不必担心，我们所说的绝对是非常，非常微量的。
In normal coal samples, quartz and other minerals are found only in trace amounts.
在一般的煤的样板中，石英和其他矿物质的含量是相当低的。
They occur in such trace amounts in natural, or "whole," coal that they aren't a problem.
它们在天然煤(或称“全”煤)中仅以痕量存在，并不构成问题。
Both the FDA and health Canada state that those trace amounts pose negligible health risks.
不论食品及药物管理局还是加拿大的卫生部，都认为二恶英少到可以忽略的地步。
Trace amounts of radiation from Japan have been detected across the United States and Europe.
从日本到达美国及欧洲的辐射量及其微弱。
Now, the company admits that the epoxy liners in its bottles used to contain trace amounts of BPA.
现在，公司承认在它的这个水壶里面的环氧衬里里面曾经含有微量的BPA。
Previously the agency said the trace amounts of BPA that leach out of food containers are not dangerous.
之前这个机构说食物容器中渗出的微量bpa并没有危害。
Ingredients also include sodium, calcium, silica, sulfur and a high macro-molecular complex-all in trace amounts.
成分中还包括微量的钠，钙，硅，硫和高宏观分子混合物-所有都是微量的。
In large amounts it is toxic, but in trace amounts it enables organisms to produce enzymes that help cells to function.
大剂量时是毒物，但在微量是它能使有机体生成能量使细胞发挥功能。
The lack of evidence of harm to humans by trace amounts of melamine because of the varied human diet and other factors.
由于多样化的人类饮食和其它因素，缺少表明少量三聚氰胺会对人类的伤害的证据。
It was reported that trace amounts of arsenic in iron ores, spherical ores and sintering ores were determined by GFAAS.
前言：采用石墨炉原子吸收法，测定了铁矿石、球团矿和烧结矿中微量杂质砷。
It was reported that trace amounts of arsenic in iron ores, spherical ores and sintering ores were determined by GFAAS.
采用石墨炉原子吸收法，测定了铁矿石、球团矿和烧结矿中微量杂质砷。
Human eccrine sweat is essentially a dilute solution of sodium chloride with trace amounts of other plasma electrolytes.
人体的汗液实质上是一种含有痕量其它血浆电解质的稀氯化钠溶液。
It's found in trace amounts in everything from children's costume jewelry to imported candies to soil and drinking water.
从儿童的服装首饰到进口的糖、肥料和饮用水中的任何东西都已发现含有微量铅。
Coefficient of variation of the precision experiments met requirements for analysis of trace amounts of multiple pesticides.
精密度试验的变异系数满足农药多残留痕量分析的要求。
The atmosphere is roughly 78 percent nitrogen, 21 percent oxygen, with trace amounts of water, argon, carbon dioxide and other gases.
地球大气含有大约78%的氮气、21%的氧气和痕量的水蒸气、氩气和二氧化碳等其它气体。
In fact, until 1900, salt mined and used by residents in the Kanawha River Valley in West Virginia contained trace amounts of iodine.
事实上，一直到1900年，西弗吉尼亚州的卡诺瓦河谷居民开采并食用的盐都富含碘。
They also require trace amounts of iron which limits phytoplankton growth in large areas of the ocean because iron concentrations are very low.
它们还需要微量的铁，由于海洋中铁的含量非常低，限制了浮游植物大面积的生长。
Lithopone is a white pigment composed of a mixture of barium sulfate (68-70 %) and zinc sulfide (28-30%) with trace amounts of zinc oxide.
立德粉是白色颜料硫酸钡(68- 70%)和硫化锌(28 - 30%)同氧化锌的微量的混合物。
Lithopone is a white pigment composed of a mixture of barium sulfate (68-70 %) and zinc sulfide (28-30%) with trace amounts of zinc oxide.
立德粉是白色颜料硫酸钡(68- 70%)和硫化锌(28 - 30%)同氧化锌的微量的混合物。
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