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- In the whole process of forming hydrocarbon, there exist the joining and removal of hydrogen or oxygen atom and heteroatom from the beginning to end. 人所熟知的胡萝卜烷由胡萝卜素加氢构成,在转化中需要消耗大量的氢,因而整个过程是非常典型的氧化还原反应。
- All experimental results ofcarbon-containing materials-FkO systems at high pressure and temperature indicate that H2O participates in the hydrocarbon formation reactions, which provides hydrogen to form hydrocarbons and provides oxygen for CCh. 气相色谱分析结果表明，含碳物质与水(含水矿物)在高温高压下反应，均生成了以CH_4为主的烃类气体，并伴有CO_2等，表明H_2O可参与成烃反应，为烃类形成提供氢源，为CO_2形成提供氧源。
- The pollutants often occur with high levels of other toxins such as lead, zinc, and ground-level ozone, a component of smog formed by chemical reactions between car exhausts and sunlight. 这些污染物常常与其他有害物质，如铅、锌和地面臭氧一起出现。地面臭氧是汽车排气与太阳光一起发生光化学反应形成的一种烟雾成分。
- non-azeotrope forming hydrocarbon [化] 不生成共沸液的烃类
- The pollutants often occur with high levels of other toxins such as lead,zinc,and ground-level ozone,a component of smog formed by chemical reactions between car exhausts and sunlight. 这些污染物常常与其他有害物质，如铅、锌和地面臭氧一起出现。地面臭氧是汽车排气与太阳光一起发生光化学反应形成的一种烟雾成分。
- The basinal location of such build-ups places reservoirs in proximity to source beds, and so commonly forms hydrocarbon accumulations. 这种生物建造的盆地位置，使储集层贴近于生油层，因此往往形成烃类聚集。
- Smog hung in the sky (over the city). (城市)上空烟雾弥漫。
- Black smog reduced visibility to about fifty yards. 黑色的烟雾使能见度降到大约五十码左右。
- Smog used to bring London traffic to a standstill. 过去伦敦的交通常因烟雾而受阻。
- These gases form polluted air, or smog. 而这些气体就会形成污染空气或烟雾。
- The paint is sold in powdered form. 该油漆以粉制品形式出售。
- Most synthetic detergents are in the form of powder or liquid. 大多数合成洗涤剂呈粉状或液态。
- The ginpole is the simplest form of derrick. 起重吊杆是一种最简单的起重机。
- The script is massaged into final form. 这篇稿子经过修改已定稿。
- Selfishness in any form is my pet aversion. 我最讨厌自私自利，不管它以什么形式出现。
- Smog: A form of air pollution produced when sunlight causes hydrocarbons and nitrogen oxides from automotive emissions to combine in a photochemical reaction. 烟雾污染:一种空气污染,由交通工具排放的碳氢和氮氧化合物在阳光的照射下,发生光化学反应而产生。
- Some biological molecules have the form of a helix. 有些生物分子呈螺旋状。
- It is possible to transmute one form of energy into another. 把某种形态的能量改变成另一形态的能量是可能的。
- Could this verb be used in progressive form? 这个动词可以用进行式吗？
- The two parties have united to form a coalition. 这两个党已结成联盟。
