skeleton formation

The skeleton is a complicate and dynamic tissue. Many factors are involved in skeleton formation and function, such as transcription factors, signal pathways, and chromosome modifying complexes.

骨是一个动态的、复杂的组织，在它的形成以及发挥功能的过程中，受到了各种转录因子、信号通路、染色体改构复合物等因素的影响。

The arc erosion of CuW70/ CrCu integrated contact is first from the even volatilization of the surface Cu, following by the formation of a W shell on the surface of W skeleton, then the shell flake off, after this, new arc erosion occur.

CuW70的烧损先是表层的Cu均匀挥发，接着在骨架的表面形成一层以W为主的壳层，然后壳层剥落，裸露出来的继续烧损，如此反复，导致了触头的烧损。