两次喷发活动的确认为研究老黑山火山喷发历史、喷发过程、喷发危险性评价和灾害预测等提供了新依据。
The confirmation of two-stage eruptions is helpful to learn the history and process of Laoheishan Volcano eruption and the assessment and mitigation of volcanic hazard in the future.
论文研究了上海港口经济综合竞争力的评价模型，对于正确认识上海港口经济所处阶段，提出实用性政策意见提供决策依据。
The thesis has studied the evaluation model for port economy competitiveness which provide an effective method to acquire the really state of Shanghai port economy and make correspond policy.
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