一类: of the same class; of the sa ...平面: plane; two dimensions; flat ...微分: differential系统: system极限: the limit; the maximum; the ...环: ring; hoop的: 4次方是 The fourth power of 2 i ...存在: exist; be惟一: only; sole; unique性: nature; character; dispositi ...一类平面微分系统极限环的存在唯一性: the existence and uniqueness of limit cycles of a class of plane differential systems一类非线性微分方程极限环的存在性: the existence of limit cycles of some non-linear differential equations一类平面二次方程的极限环存在性: the existence of limit cycles for a class of planar quadratic equations一类非线性方程的有界性与极限环的存在性: existence of limit cycles and boundedness of a class of nonlinear equations一类生化反应系统微分方程模型的极限环: limit cycles in a class of biochemistry reaction systems一类含小参数微分方程鸭解的存在性: existence of duck solutions of a kind of differential equations with small parameter微分方程的极限环: limit cycle of a differential equation极限环: cycle limit; limit cycle惟一性索引: unique index极限环的非线性时间变换法: a nonlinear time transformation method for limit cycles极限环境: extreme environment极限环振荡: limit cycle oscillation稳定极限环: stable limit cycle平面微元: plane element半稳定极限环: half stable limit cycle
