1. A radon proof hydrous paint could well avoid the perniciousness of radon. The results of experiment and...
本文分析了试验结果，探讨了防氡涂料的机理。
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2. Following introduction on status of urban road traffic noise and its perniciousness, recent progresses in urban traffic noise assessment were browsed.
3. This paper presents the producing cause of different unfavourable flow conditions in the outlet area of approach channel for ship gate and its perniciousness.
阐述了水利枢纽船闸引航道口门区各种不利流态产生的原因，及其危害性，和提出了改善的措施。
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4. This paper expounds the perniciousness of illegally occupying the burning line, analyzes the cause of illegally occupying the burning line, and puts forward some effective treatment measures.
阐述了违章占压燃气管线的危害性，分析了造成违章占压燃气管线的原因，提出了有效的治理措施。
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5. This paper expounds the perniciousness of illegally occupying the burning line, analyzes the cause of illegally occupying the burning line, and puts forward some effective treatment measures.
