The ozone layer surrounding the earth protects our skin from being hurt by the ultraviolet rays.环绕地球的臭氧层保护着我们的皮肤免受紫外线的伤害.Please shut up! All that hot air is damaging the Ozone Layer.您还是免开尊口吧! 所有热空气都会破坏臭氧层.Many groups of ...
The outstanding performance in antioxidation and anti - cautery extended the duration of all the parts in transmission.优良的抗氧化能力及抗腐蚀能力,延长所有传动部件寿命.The mechanism of synthetic diamond antioxidation is also discussed.同时,探讨了人造...