查询词典 nitrogen dioxide

Another type of pollution is the release of harmful gases , such as sulfur dioxide , carbon monoxide , nitrogen oxides , and chemical vapors.

另一类污染是有毒气体的排放，如二氧化硫、一氧化碳、氮氧化物及化学蒸气。

They reckon it has always contained a lot of nitrogen, but that earlycarbon dioxide was mopped up by the formation of limestone while methane levelsrose as a result of the exhalations of a group of bugs—then common, nowrare—called methanogens.

他们估计大气层中已经有很多的氮素，而早期的二氧化碳是石灰石的形成释放出来的，与此同时，在当时极为普遍的产甲烷菌还源源不断的释放出甲烷气体。

Welding to materials like aluminum, copper, white metal, and brass that have low melting temperatures and are easily oxidized, can be facilitated by flushing the welding spot with nitrogen, argon, helium, carbon dioxide or some similar protective gas.

焊接那些像铝、铜、白合金、黄铜这些熔点很低、易于氧化的材料，使用氮气、氩气、氦气、二氧化碳或一些类似的保护气体，吹洗焊接焊点。

The dry atmosphere consists almost entirely of nitrogen (78.1% volume mixing ratio) and oxygen (20.9% volume mixing ratio), together with a number of trace gases, such as argon (0.93% volume mixing ratio), helium, and radiatively active greenhouse gases such as carbon dioxide (0.035% volume mixing ratio), and ozone.

干大气几乎完全由氮（78.1%的体积混合比）和氧（20.9%的体积混合比）构成，还包括一些微量气体，如氩（0.93%的体积混合比）、氦，以及对辐射起作用的温室气体如二氧化碳（0.035%的体积混合比）和臭氧。

One is acid rain, which is created by the millions of tones of sulphur dioxide and nitrogen oxides spewed out of North American smokestacks and automobile exhaust pipes.

酸雨是由排放大量的二氧化硫和氧化氮造成的。

One is acid rain , which is created by the millions of tones of sulphur dioxide and nitrogen oxides spewed out of North American smokestacks and automobile exhaust pipes.

其一是酸雨，它是由二氧化硫和氮氧化物产生的数百万吨2250北美烟囱和汽车尾气混合氧化物出。

What are your goals and strategies for growth?

你的成长目标和策略是什么？

And unto the angel of the church in Sardis write; These things saith he that hath the seven irits of God, and the seven star I know thy works, that thou hast a name that thou livest, and art dead.

3：1 你要写信给撒狄教会的使者，说，那有神的七灵和七星的，说，我知道你的行为，按名你是活的，其实是死的。