1) physical degradation
物理退化
1.
The degradations include physical degradation,biological degradation and chemical degradation.
莱州湾南岸滨海湿地的退化包括物理退化、生物退化和化学退化3个方面。
2) physical deterioration
物理性能的退化
3) soil physical degradation
土壤物理性质退化
1.
Water problems resclted from seasonal drought and soil moisture characteristic and soil physical degradation in Hilly Latored Soil Area of South Subtropics are described.
分析了南亚热带丘陵赤红壤区受气候因素的制约形成明显的湿季和旱季,阐述了季节性干旱、土壤水分特征因子和土壤物理性质退化导致的水分问题,提出了农业可持续发展的土壤水分调控生物或工程技术措施,如:农林复合生态系统的构建、减少地表径流、提高降雨入渗率、以肥调水、覆盖技术、人工保水措施、节水灌溉技术等。
4) biological degradation
生物退化
1.
The degradations include physical degradation,biological degradation and chemical degradation.
莱州湾南岸滨海湿地的退化包括物理退化、生物退化和化学退化3个方面。
5) degenerate parabolic
退化抛物
1.
The properties of the solution to some degenerate parabolic equation with shift element are considered in this paper.
对一类具有扰动项的退化抛物方程,考虑其解的性质。
6) Degradation mechanism
退化机理
1.
This work presents the degradation mechanisms of GaN-based LED including degradation of the encapsulating material, electromigration of contact metal, p-W contact degradation, creation of deep levels and non-radiative recombination centers, and the measures improving reliability of the device.
本文从封装材料退化、金属的电迁移、p型欧姆接触退化、深能级与非辐射复合中心增加等方面介绍了GaN基LED的退化机理以及提高器件可靠性的措施,并对GaN基LED的应用前景进行了展望。
补充资料：物理学危机(见物理学革命)
物理学危机(见物理学革命)
crisis in physics
谜幂咪革命奋一(c ris始inphysics)见漪理学
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条