1 | The Alkene Double Bond: A Focus of Reactivity. | |
2 | Polymers of propylene or of other olefins, in primary forms. | |
3 | The two main classes of petrochemicals are olefins and aromatics. | |
4 | Also, PAHs may affect the fetus' DNA directly. | |
5 | The green indicates the presence of complex molecules called polycyclic aromatic hydrocarbons. | |
6 | The straight-chain alkanes exacerbate the problem of engine " knock ". | |
7 | Polymers of vinyl chloride or of other halogenated olefins, in primary forms. | |
8 | The article uses headspace gas chromatography to measure halogenated hydrocarbon in the sample water. | |
9 | The heating coil melts the hydrates and partially stabilizes the hydrocarbon liquids. | |
10 | The aromatics are ringed hydrocarbons, such as benzene, toluene and xylene. Benzene is used to make polystyrenes (e.g. | |
11 | The ethoxyline resin is type A of bisphenol, cyclic hydrocarbon, linearity phenol formaldehyde and so on. | |
12 | Dr Keith calls this approach "carbon-neutral hydrocarbons". | |
13 | 在城市地区机动车辆是多环芳烃的主要来源。
In urban areas motor vehicles are a major source of PAHs. | |
14 | Olefin is strong and resists moisture while acrylic is light and can resist sunlight. | |
15 | 这磷矿所含烃量能提供锻烧所需的大部分热量。
The hydrocarbon content of this phosphate ore provides most of the heat needed for the calcination. | |
16 | 苏北盆地金湖凹陷古近系烃源岩具有“浅熟”特征。
The Paleogene source rock in Jinhu depression, Subei basin, is characterized by "shallow maturation". | |
17 | 烃的磺化、硝化或亚硝化衍生物,不论是否卤化。
Sulphonated, nitrated or nitrosated derivatives of hydrocarbons, whether or not halogenated. | |
18 | 佩雷拉说好消息是纽约市的多环芳烃含量正在减少。
The good news, Perera said, is that levels of PAHs are declining in New York City. | |
19 | 由此,他们推测,足够常的烷烃最终会具有亲水性。
From their findings they predicted that an alkane that was long enough would eventually cross over into hydrophilicity . | |
20 | 没有证据证明多环芳烃对她女儿的智力产生了影响。
There is no evidence that the PAHs affected her daughter' s IQ. |