alternating knot meaning in English

交变纽结
交错纽结

For almost alternating knot , we proved that the genus of f equals zero when the number of components of f is less than eight
对于几乎交错纽结，证明了当时，的亏格为零。
Let k be an alternating knot or almost alternating knot , fs - k be an incompressible pair - wise incompressible surface
设是中的交错纽结或是几乎交错纽结，是中不可压缩、分段不可压缩曲面。
This paper studied the properties of f by discussing the properties of f s . for alternating knot , the genus of f equals zero when the component of f is less than eight
本文主要是通过讨论的性质来研究在交错纽结补中和几乎交错纽结补中的曲面的性质。对于交错纽结，当时，有的亏格为零。