aCrude oil and gas are the raw materials of the petroleum industry. It is the business of the industry to find them, to retrieve them from the earth on-shore and off-shore, to manufacture useful products from them and to sell the products in the markets of the world. 原油和气体是石油...
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The fumes from iron, steel, chemical, and petroleum (石油) production add particles to the air. The effects of air pollution range from mild headaches to death. The levels of pollution found in heavyfor traffic may cause headaches for loss of clear vision. Wherever coal and oil are used ...
[translate] aTankers are normally designed to carry petroleum products. These products range from crude oil to gasoline, with specific gravities in the range of 0.73 to 0.97 罐车通常被设计运载石油产品。 这些产品范围从原油到汽油,以比重在0.73范围内到0.97 [translate] ...
crude oil that is found deep in the earth’s crust. Although both types of fuel are commonly used, diesel is generally used to power larger engines, such as those found in trucks, boats, and cranes, while petrol is used to power smaller engines, such as those found in cars and ...
Oil prices are expected to remain lower for longer. 出自-2017年6月阅读原文 Nonetheless, 20% of well-off parents say their children's schedules are too hectic, compared with 8% of poorer parents. 出自-2017年6月阅读原文 None of the chain's stores in the Washington metropolitan area are to...
is the gas fumes from cars.Statistics show that 93 percent of all auto trips are within cities.Another major source of dirty air is the burning of coal and oil for energy.This energy is needed to make electricity.Of course,much more electricity is used in the city than in the country. ...
a疙梁梁 Boil Liang Liang[translate] a它也有丰富的海底资源 It also has the rich seabed resources[translate] a塑料是由石油炼制的产品制成的,石油资源是有限的。 The plastic is made by the petroleum refinement product, the oil resource is limited.[translate]...
For millennia Indigenous communities have relied on the far north's caribou herds for sustenance. But as the herds dwindle, the future becomes difficult to predict.
aPetroleum (also called crude oil), in the unrefined or crude form, like many industrial feedstocks has little or no direct use and its value as an industrial commodity is only realized after the production of salable products. Even then, the market demand dictates the type of products tha...