This is a cylinder composed solely of carbon atoms , and one of its properties is good electrical conductivity 碳纳米管是一种全部由碳原子组成的圆柱体，它的一大优点是良好的导电性。
Diamonds are formed deep within the earth where heat and pressure create the necessary condition for carbon atoms to bond tightly 钻石是在地球的深部因为热和压力将碳原子压紧而形成的。
Diamonds are formed deep within the earth where heat and pressure create the necessary condition for carbon atoms to bond tightly 钻石在地层中形成，在那里热和压力将碳原子压得紧紧的。
Diamonds are formed deep within the earth where heat and pressure create the necessary condition for carbon atoms to bond tightly 只有深埋在地下，温度和压力恰好适合碳原子紧密结合，才能够形成钻石。
The third position from a designated carbon atom in an organic molecule at which an atom or a radical may be substituted 第三位在有机分子中从一指定碳原子后第三个位置，在此一个原子或原子团可能被替代
Diamonds are formed deep within the earth where heat and pressure create the necessary condition for carbon atoms to bond tightly 钻石形成于地层深处，在那里，热量和压力为碳原子紧密相连提供了必要条件。
Other chemicals were added to encourage the carbon atoms to attract each other , producing a rough diamond within two weeks 然后，加入其他化学制品促使这些碳原子互相吸引，从而在两周内形成一颗粗糙的钻石。
They consist of concentric shells of graphite , with each shell rolled into a cylinder so the lattice of carbon atoms remains continuous 它们由石墨的同心外壳组成，每个壳圈成圆柱，所以碳原子的晶格仍是连续的。
Diamonds are formed deep within the earth where heat and pressure create the necessary condition for carbon atoms to bond tightly 钻石在地球的内部深处形成，那里高温和压力为碳原子的紧密结合创造了必要的条件。
Naphthenic having the characteristics of naphthense ， which are saturated hydrocarbons containing molecules with at least one closed ring of carbon atoms 环烷烃具有环烷特性的、至少包含一个碳原子团链的饱和烃。
