Its researchers have turned them into a type of cell that produces the insulating sheath around a nerve cell .
其研究人员已经把干细胞变成了一种在神经细胞周围产生绝缘护套的细胞。
Aerosol jet at first atomises nanoparticle-based print materials into microscopic droplets , which are then focused , using a sheath of gas , into a precise jet stream directed by a nozzle .
Whenever there 's a nick or hairline crack in an insulation sheath , the electrical field in the underlying copper subtly shifts .
在绝缘套上只要出现缺口或者毛细裂缝，线缆里的铜周围的电场就会轻微改变。
Special kinds ofsteel , natural initial corrosion of the outer layer creates a protective sheath , that prevents the corrosion from advancing further into the bulk of the material , similarly as in the case of e.g. copper .
Despite its bad reputation , cholesterol is essential to life : it is a building block of the outer membrane of cells , and it is a principal ingredient in the digestive juice bile , in the fatty sheath that insulates nerves , and in sex hormones such as estrogen and androgen .
