national degradation 中文意思是什麼

national degradation 解釋
自然降解
  • national : adj 1 民族的；國民的；國家的；國民特有的。2 國家主義的；愛國的。3 國立的 國有的 國定的；全國性的...
  • degradation : n. 1. 降級；免職。2. 退化；墮落。3. 【地質學；地理學】（地表的）剝蝕。4. 【化學】降解，遞降分解（作用）。5. 【物理學】（能的）退降。
  1. The study of soil degradation has become the focus of the 21st century inter - national pedology, agronomy, hydrology, environmental science and soil erosion science, however, a lot of theoretical problems and course mechanism about soil degradation are uncertain hitherto

    土壤退化研究已成為21世紀國際土壤學、農學、水文學、環境科學及侵蝕學科關注的熱點，但是直到今天為止有關土壤退化的許多理論問題及過程機理尚不清楚。
  2. At the national level, the socio-economic conditions would be characterized by a degradation of the very essence of human dignity.

    就一個國家來說，其社會--經濟狀況的惡化表現為人類尊嚴本質的墮落。
  3. In high - power solid - state lasers, self - focusing is the major factor for degradation of laser beam and limits the maximum laser power available. as stated in lowrence livermore national laboratory ( llnl ) reports, self - focusing, especially small - scale self - focusing, has always been a significant problem in the total design, engineering development, and safe operation of fusion lasers

    在用於慣性約束核聚變（ icf ）的高功率固體激光驅動器中，自聚焦是使光束質量變壞和限制輸出功率的主要因素，正如美國勞侖斯?利弗莫爾國家實驗室（ llnl ）的報告所述，自聚焦，特別是小尺度自聚焦，是聚變激光器總體設計、工程研製和安全運行的重要問題。
  4. Mankind is plagued by trans - national problems such as environmental degradation, arms proliferation, international crimes and terrorism

    環境惡化、武器擴散、國際犯罪、恐怖主義等跨國問題困擾著人類。
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