gases

These gases cause untold damage to the environment .

这些气体对环境造成难以估计的破坏。

Sulphur gases were emitted by the volcano .

硫磺气体由火山喷发出来。

These gases would seriously damage the patient 's respiratory system .

这些毒气会严重损害患者的呼吸系统。

The problem was that the exhaust gases contain many toxins .

问题在于废气中含有很多毒素。

Industry has been working at developing harmless substitutes for these gases

该行业一直在努力开发一些可以替代这些气体的无害物质。

There is sound scientific evidence of what certain gases do to the atmosphere .

有可靠的科学依据可以证明某些气体对大气的影响。

He passed an electric spark through a mixture of gases .

他让一束电火花穿过了一团混合气体。

The gases that may be warming the planet will have their main effect many years hence .

可能正导致地球变暖的那些气体，其主要影响将在多年后显现。

Under normal circumstances , these two gases react readily to produce carbon dioxide and water .

在正常情况下，这两种气体容易发生反应产生二氧化碳和水。

The emission of gases such as carbon dioxide should be stabilised at their present level

二氧化碳等气体的排放应该稳定在当前水平。

These gases pollute the atmosphere of towns and cities .

这些气体污染了城镇的空气。

The volcano spewed out more scorching volcanic ashes , gases and rocks

火山喷出更多灼热的火山灰、气体和岩块。

The gases are odourless .

这些气体没有气味。

Air is a mixture , not a compound of gases .

空气是气体的混合物，不是化合物。

Air is a mixture of gases .

空气是多种气体的混合物。

If plastic and rubber are burnt , they 'll give off poisonous gases .

要是塑料和橡胶被焚，就会放出有毒的气体。

When gases are heated , they expand .

气体受热会膨胀。

In large cities people breathe in dangerous gases from cars and chimneys .

在大城市人们呼吸时吸入汽车和烟囱排出的有害气体。

Active carbon adsorbs poisonous gases and impurities in liquids .

活性炭吸附毒气和液体中的杂质。

Selection of tubing material is dictated to a large degree by the aggressiveness of the stack gases .

管材的选择主要取决于烟气的腐蚀性程度。

Gases and liquids diffused .

气体和液体慢慢混合了。

The chromosphere is a frothy layer churned up by gases in the photosphere .

色球层在光球层气体的搅拌下不停地翻腾。

As countries become richer , they produce more greenhouse gases .

国家越富裕，它们制造的温室气体就越多。

The   result   would   be   higher   emissions   ofcarbon   dioxide   and   other   greenhouse   gases .

进而导致二氧化碳和其他温室气体的排放量增加。

Neon makes orange , while other gases make yellow or blue .

氖气发橙色光，而气体气体发黄色或蓝鱼光。

They fill these tubes with gases that glow when electrified .

然后把通电时发光的气体注入这些玻璃管中。

Gases are much less viscous than liquids .

气体的粘滞性大大小于液体。

This material is impervious to gases and liquids .

气体和液体都透不过这种物质。

Heat causes the distension of gases .

热使气体膨胀

Around 280 degrees C , Volatile gases and flammable tars are released .

在大约摄氏280度，挥发性的气体和可燃焦被放出。