碳

碳的化合价是4价。

Carbon has a valency of 4 .

石墨层中的碳原子相互连接形成碳环。

In graphite sheets , carbon atoms bond together in rings

钻石是碳元素的晶体结构。

Diamond is the crystalline form of the element carbon .

碳、氢、氧化合形成碳水化合物和脂肪。

Carbon , hydrogen and oxygen combine chemically to form carbohydrates and fats

最常用的方法是放射性碳定年法。

The most frequently used method is radiocarbon dating .

碳化合物氧化后必然会产生二氧化碳。

Carbon dioxide is a necessary result of the oxidation of carbon compounds .

原始的碳纤维材料很像布料。

In its untreated state the carbon fibre material is rather like cloth .

我们都需要寻求降低碳排放量的方法。

We all need to look for ways to reduce our carbon footprint .

碳尘和燃油在大发动机里越积越多，造成了发动机短路。

Carbon dust and oil build up in large motors and cause them to short-circuit

有机化合物的分子中含碳。

Organic compounds contain carbon in their molecules .

甲烷分子由1个碳原子与4个氢原子构成。

A methane molecule is composed of one carbon atom attached to four hydrogens .

现在利用这件特定的仪器，就可以真正观察到单个碳原子了。

Now with this particular piece of instrumentation , you can actually spot individual carbon atoms .

可以通过植树对航空飞行进行碳中和，以抵消温室气体的排放。

You can make your flights carbon neutral by planting trees to make up for the greenhouse gas emissions .

这个分子包含四个呈环状排列的碳原子，每两个碳原子之间形成一个三价键。

The molecule contains four carbon atoms arranged in a ring with a triple bond between two of them .

如果政府开始对公路运输征收碳税，那么水运就会变得更加具有吸引力。

If the Government introduces a carbon tax on road haulage , then carriage by water will become more attractive .

通过投资高效能的工厂，它可以节余很多宝贵的碳信用额来出售给更富有、更浪费的国家。

By investing in efficient plant it could generate lots of valuable carbon credits to sell to wealthier , more wasteful nations .

碳是一种（化学）元素，而二氧化碳则是一种化合物。

Carbon is an element , while carbon dioxide is a compound .

这样的碳原子称为手性碳。

Such a carbon is designated as a chiral carbon .

在稠环和桥环化合物中，两个碳原子是两个环公用的。

In fused-ring and bridged-ring compounds two carbons are common to the two rings .

这种代谢物似乎同从暴露到碳氯灵的蚊幼虫所得到的一种物质一样。

This metabolite appeared identical to one obtained from mosquito larvae exposed to isobenzan .

糖含有碳原子。

There are carbon atoms in sugar .

钻石是纯净的碳。

Diamonds are pure carbon .

这有可能为抵制未来的碳排放法规供便利，或者有可能帮助美国铝业拿到绿色经济补贴。

This could provide a defence against future emissions regulations or perhaps help it grab green subsidies .

碳的同素异形体包括金刚石、石墨和木炭，所有这些物质都具有相同的化学性质。

The allotropes of carbon include diamond , graphite and charcoal , all with the same chemical properties .

碳原子的四个价电子都各与氢原子的一个价电子共用。

Each of the four valency electrons of the carbon atom is shared with one of a hydrogen atom .

政客们可能会对付污染者,而科学家们则与碳排放作斗争。

Politicians may tackle polluters while scientists do battle with carbon emissions .

据《国际商业时报》报道，随着大众汽车公司从碳排放丑闻中恢复元气，电动汽车的销量有望增加。

According to the International Business Times , electric car sales are expected to increase as Volkswagen is still recovering from its emissions scandal .

尽管有北极熊的悲剧,碳排放量也在飙升,但大多数人很难相信全球变暖会对他们个人产生影响。

Despite mournful polar bears and charts showing carbon emissions soaring , most people find it hard to believe that global warming will affect them personally .

德国还计划到2050年时将本国的碳排放量降低80%-95%，以推动本国向绿色能源的转变。

The country is also planning to reduce its carbon footprint by 80-95 % by 2050 , sparking a shift to green energy in the country .

国际碳价格下限的协议将是此进程的良好起点。

Agreement   on   an   international   carbon-price   floor   would   be   a   good   starting   point in   that   process .