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石油是一种液体矿物。石油在工业、农业,国防、交通运输以及日常生活上面都起着极重要的作用,是国家经济建设中不可缺少的重要物资之一。在工业建设中带动机器的各种发动机所需要的燃料和各种机器所需要的润滑油,绝大部分是从石油里面提炼出来的。没有石油,许多机器就无法转动。农业上开动拖拉机也需要石油。假使要在我国十分之一的耕地上进行机械耕作,就需要五万多台拖拉机,每台拖拉机每年大概要消耗八到十五吨油料,五万台拖拉机每年就要消耗四十万到七十五万
Oil is a liquid mineral. Petroleum plays an extremely important role in industry, agriculture, national defense, transportation, and daily life. It is one of the indispensable important materials in the national economic construction. In the industrial construction, most of the fuel needed to drive the various engines of the machine and the lubricants required for various machines are extracted from the oil. Without oil, many machines cannot turn. Driving oil in agriculture also requires oil. If we want to carry out mechanical farming on one-tenth of China’s arable land, we will need more than 50,000 tractors. Each tractor will consume about 8 to 15 tons of fuel each year. 50,000 tractors will consume 400,000 to 75 per year. ten thousand