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地下经济
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地下经济
Encyclopedia
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地下经济
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underground economy
地下经济
逃避政府的管制、税收和监察,未向政府申报和纳税,其产值和收入未纳入国民生产总值的所有经济活动。涉及生产、流通、分配、消费等各个经济环节,可谓无所不在。是当前世界范围内的一种普遍现象,被国际社会公认为“经济黑洞”。
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biological effectiveness of soil pollutants
biological effect of electromagnetic field
biological effect of electromagnetic field exposure
biological effect of environmental electromagnetic field
biological effect of ionizing radiation
biological effect of magnetic field
biological effect of microwave
biological effect of nanomaterials
biological effect of nuclear radiation
biological effect of pulsed electromagnetic field
biological effect of radiation
biological effect of space radiation
biological effects of Carbon dioxide
biological effects of low-Level exposure
biological effects of plasmas
biological effects of radiation
biological electric field
biological electricity
biological electromagnetic intervention
biological electromagnetism wave
biological energy conversion
biological energy resource of China
biological engineering technology
biological entropy
biological evaluation of medical materials
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