When nitric acid is poured on copper, a brown vapor gives off.
将硝酸倒在铜上，会散发出一种棕色的蒸气。
The nitric acid changed the cuticle of his mouth to a yellow color.
硝酸将他口腔里的护膜变成了一种黄颜色。
They are generally made by a reaction between nitric acid and an organic compound.
一般都是由硝酸与一种有机化合物反应生成。
It is formed by reacting nitric acid with a calcium salt (oxide, carbonate or hydroxide).
由硝酸与钙盐(氧化物，碳酸盐或氢氧化物)反应生成。
Diluted nitric acid is used as a selective solvent to separate scheelite from wolframite.
本文试验了以稀硝酸作为黑、白钨矿分离的选择性溶剂。
The indium sesquioxide with over 99% purity can be prepared by a decomposition of nitric acid.
采用硝酸分解法可制取纯度高于99%的三氧化二铟。
A problem related to nitrification is a drop in PH for the system due to the formation of nitric acid.
和硝化作用有关的一个问题就是由于生成硝酸而使系统内的PH值降低。
Because nitric acid is a corrosive chemical, extreme care must be used with handling, storage, and use.
由于硝酸是腐蚀性的化学试剂，在装卸、存储和使用时必须小心谨慎。
Specimens prepared by polishing and etching in a weak solution of nitric acid and alcohol reveal the lamellar structure of alternating plates that forms on slow cooling.
通过打磨并在弱硝酸酒精溶液中蚀刻制备的样本显示出由缓慢冷却形成的交互层状的薄片结构。
Dissolve a pinch of silver and mercury in a solution of nitric acid, drop in a lump of metal amalgam, and soon a spidery, glittering "Tree of Diana" will form on the glass.
在硝酸中溶解少量银和水银，再扔一小块金属混合物，不久，蛛网一样的闪亮的“戴安娜之树”就会在玻璃上形成。
Following 133 hours of firing a beam of intense laser light which created nitric acid particles in the air it resulted in binding the water molecules together to create droplets.
在连续133小小时向空中发射密集激光束从而在空中制造出硝酸粒子后，空气中的水分子凝聚在一起形成了小水滴。
Aquatint: it is an etching process on copper or steel by means of nitric acid. in this technique a thin layer of resin dust is sprinkled on the plate and heated to make it adhere.
水彩色调：用硝酸在钢片或铜片上作腐蚀的蚀刻法。这个技巧是在版面上洒上一层薄薄的树脂粉，加热把它粘附于版面。
The results show that nitrate accumulation will not increase with the increase of temperature mainly due to the inhibition of free nitric acid when temperatures reach a certain level.
试验结果表明：当温度达到一定条件时，亚硝酸氮的积累不再随温度升高而增加的主要原因是游离亚硝酸的抑制作用。
Endothelial cells manufacture a magical protective molecule of gas called nitric oxide, which protects our blood vessels.
内皮细胞可以释放一种保护我们血管的神奇气体分子——一氧化氮。
They then applied the substances to a culture of human cells. And the cells experienced a 240 percent increase in the production of nitric oxide, which is known to jump start the immune system.
然后，科学家们将这些物质加入人类细胞培养皿中，发现这些细胞的一氧化氮含量增长了240%，而一氧化氮可以迅速启动人类的免疫系统。
They discovered a pathway that inhibits nitric oxide and thus impedes blood flow.
他们发现了抑制一氧化氮并阻止血液流动的途径。
They discovered a pathway that inhibits nitric oxide and thus impedesblood flow.
他们发现了抑制一氧化氮并阻止血液流动的途径。
So a positive attitude can increase levels of nitric oxide, which help to balance neurotransmitters, improve immunity, and increase circulation, she says.
她说，所以积极的态度能够增强一氧化氮的水平，一氧化氮能够帮助平衡神经递质，提高免疫力和增加循环。
Within a day of storage, blood loses 70% of its nitric oxide. After a few days, up to 90% has been lost.
事实上在储存过程中一氧化氮的散失非常之迅速——一天便失去70%而数天则可达90%。
However, simultaneously monitoring nitric oxide, carbon monoxide,hydro-peroxides, nitrites, nitrates, pentane and ethane in the breath, wouldallow a much more definitive diagnosis of asthma.
无论如何，同时地检测呼吸中的氧化一氮、一氧化碳、,过氧化氢物、亚硝酸盐、硝酸盐,、戊烷和乙烷，将能对哮喘做确定性的诊断。
Sugar consumption increases serum levels of uric acid, which may lower the levels of nitric oxide, a chemical that is needed to dilate the blood vessels to keep the pressure low, the researchers said.
研究者说，糖的摄入提高血尿酸水平，降低氮氧化物水平，这个化合物可扩张血管降低血压。
But the Cardiff team, funded by the British Heart Foundation, have identified a surprising new mechanism that works independently of nitric oxide.
然而，由英国心脏基金会(British Heart Foundation)资助的加的夫研究小组发现了一个惊人的新机制，该机制无需依赖一氧化氮。
Dr Stamler thus wondered if a lack of nitric oxide was causing the problems associated with transfusions.
Stamler医生因此怀疑一氧化氮的缺乏就引发输血问题的元凶。
But it may be one no longer. A group of Dr Rao's colleagues, led by Jonathan Stamler, think the answer is a gas called nitric oxide-or, rather, a lack of it.
一组饶博士的同事，在约翰森·斯塔姆勒(jonathan Stamler)的领导下提出谜底可能就是一氧化氮——不是搀杂，而是缺乏。
The scientists also evaluated levels of ozone, nitric oxide, sulfur dioxide and carbon monoxide, but these showed a much weaker relationship.
科学家也评估臭氧、一氧化氮、二氧化硫和一氧化碳的水平，但是这些现实一种很弱的联系。
Specifically, they looked to see if humming led to greater levels of exhaled nitric oxide, a gas produced in the sinuses.
他们特别观察，哼绵羊音是否会从鼻窦中拍出的更多一氧化氮。
Specifically, they looked to see if humming led to greater levels of exhaled nitric oxide, a gas produced in the sinuses.
他们特别观察，哼绵羊音是否会从鼻窦中拍出的更多一氧化氮。
应用推荐