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海北翻译公司关键字：Rare in the modern industry has a wide range of uses, dosage, though small at present, but the basis of proven reserves available for mining life were ranging from decades to centuries, which can be mined by 1994 annual output of less than 200 years year are: tungsten (157 years), nickel (127 years), bare (10 years), tantalum (109 years), germanium (78 years), antimony (48 years). Coal accounts for about 90% of all energy reserves, according to the United Nations' Energy Statistics Yearbook ", 1993, the world's recoverable coal reserves of 519.36 billion tons, output of 3.47 billion tons that year, but also 150 years of mining, of which 622 reserves in China million tons, production of 1.15 billion tons that year, but also exploitation of 55 years. In 1992 the 14th World Petroleum Congress estimated that ultimately recoverable oil reserves of 311.3 billion tons, by 1996 the world's proven oil reserves of 140 billion tons, when the annual oil 3.4 billion tons (production until the 1950s, 750 million tons), but also for exploitation of 41 years; estimated ultimate recoverable gas reserves of 327 trillion m 3,1995 global proved reserves 139.7 trillion cubic meters, according to an annual output of 221 trillion cubic meters in 1994, the calculation also 63.3 years for open ("world situation map said," 1997), even if there is a new proven reserves, but oil and gas is an established and non-renewable, one day approaching the limits of reserves. Sun 38 × 1026 joules per second of radiation the Earth's surface, equivalent to 11.5 billion tons of coal combustion heat issue; green plants for the utilization of solar energy of about 10% of the total global production plant for the energy equivalent of about 660 × 1015 kcal / year, the direct use of human energy is limited. Of the population of the earth's resources and environment carrying capacity of self-purification, the existence of the limit cycle capacity, the global environment to maintain orderly development, we must have the ability to continue to enter the negative entropy, or it will cause the system by ordering changes to environmental degradation, there is a system of extreme crisis and collapse. Since human beings into an industrialized society since the development and utilization of environmental resources
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