氧化过程对 反应烧结 碳化硅材料的导电性能影响不大.But the oxidation of RB - SiC does't affect largely on its electric conduction.常用的轴承材料有碳化硅陶瓷 、 石墨 、 填充聚四氟乙烯等.Commonly used bearing material has SiC ceramics, graphite, PTFE, such as filling...
虽然贫穷并非城市的特产, 但是可能由于某些地区的人口过多而使贫穷现象在该处较为明显.Poverty is not endemic to cities although, perhaps because of the crowded conditions in certain areas.知足使贫穷的人富有; 而贪婪使富足的人贫穷.Content makes poor men rich; discontent makes rich men...
Sooner or later, life will put the relationship to the test.总有一天，生活会考验这种关系是否牢固。‘When shall I tell him?’ ‘The sooner the better.’“我什么时候告诉他？”“越快越好。”We shall reckon with the renegades sooner or later.我们迟早要跟这些叛徒算账.If you tur...