周期性的

Monomotor bogies , where both axles of the bogie are driven by a single motor , often encounter torsional resonances, which lead to periodic longitudinal slip.

对于单马转向架，转向架上两根轴由同一个马，常常会遇到扭转共振，这将导致周期滑。

Halosere A plant community in a succession that starts on land periodically inundated by the sea. Haloseres include salt-and flooding-tolerant pioneer communities on mudflats and saltmarshes.

是一种在周期被海水淹没陆地上进行演替植物群落。它包括那些在泥滩和盐沼上生活耐盐耐淹先锋群落。

In this thesis, the plane wave expansion method is used to get the equifrequency surface.The anomalous refractive properties of photonic crystal are analyzed by using the equifrequency surface.

中文摘要光子晶体是由周期所组成，假若经由适度设计则具备改变光波传递效果。