However the small size of the Moon's core and the required surface magnetic field strengths were problematic for this theory.
可是，月球磁芯有点小，并且用这个理论看，月球表面磁场力还存在一些疑问。
According to nanometer theory, rice phytoliths must have properties of nanometer materials: surface effect, small size effect, quantum effect and macro quantum tunnel effect.
因此水稻植硅石具备纳米材料的独特性状：表面效应、小尺寸效应、量子尺寸效应和宏观量子隧道效应。
Because of small size, big curvature, it is very difficult to coat a layer metal on the surface of carbon nanotube.
因为碳纳米管尺寸小，曲率大，易缠结，要想在其表面进行化学镀比较困难。
应用推荐