1·The center conditions and isochronous center conditions for a class of quasi - analytic systems were investigated.
研究了一类拟解析系统的中心条件与等时中心条件。
2·We obtain the existence and uniqueness of the classical solution by its equivalent parabolic quasi variational inequality.
利用其等价的抛物拟变分不等式，得到了该问题古典解的存在唯一性。
3·The results show that the double period bifurcation, quasi period motion and chaotic motion can be found under some condition.
结果表明：在某些条件下，转轴系统有可能产生倍周期分岔、拟周期分岔并出现混沌振动。
4·By studying the autocorrelation function of the probe signal, it is found that the large eddy quasi ordering structure likely exists in near wake, but there is no turbulence in far wake.
结合探针信号的自相关函数，研究流场湍流结构，发现近尾可能存在大涡拟序结构，而在远尾则没有湍流。
5·Some existence theorems of solutions for the quasi equilibrium problems are proved under noncompact setting of topological vector spaces.
在拓扑矢量空间的非紧设置下证明了拟平衡问题解的某些存在定理。