常微模型只考虑时间因素对种群密度的影响。
Time is only considered as the effect on population density in ordinary model.
不同类型的常微方程可以采用解析解法或者数值解法。
When solving different ordinary differential equations, we may take the analytical solution or numerical solution.
进一步我们也给出判别一个常微系统是连续遍历系统的充分条件。
Furthermore, we obtain a sufficient condition by which we can distinguish if an ordinary differntial system is a continuous ergodic system.
提出一种关于求解常微线性系统的离散波形松驰方法的新的加速收敛技巧。
In this paper a new technique for acceler at ion of convergence of discretized waveform method is proposed for solving ordinary linear differential systems.
利用延迟重构变换的雅可比行列式，分析了常微方程系统重构的拓扑性质。
The topological properties of the delay-time reconstruction transformation of dynamic system are analysed by means of the Jacobian of the transformation.
在光学精密测量中，PZT常作为移相驱动器用于各类干涉仪，作为纳米精度的微位移执行器驱动各种精密平移台，以及用于精密位移或压力传感器等。
In the measurement of optical, PZT is often used as driving machine to the interference instruments, then the nonlinearity should affect the precision of the measurement.
哈斯·金德用复变函数理论讨论了微弯滑行板的非定常运动，获得了计算水动力的一般公式。
Haskind discussed the non-steady motions of small curved planing plate by using the theory of complex functions, and obtained the general expression of hydrodynamic forces.
结果发现，有效磁各向异性常数随粒度的减小而增大，微粉的有效磁各向异性常数大于锂铁氧体的磁晶各向异性常。
The calculated results showed that the effective magnetic anisotropy constants of ultrafine particles were larger than the magnetocrystalline anisotropy constant of Li-ferrite.
在学习中，我常遇到一些困难，但这点困难与鲁滨逊独自生活在荒岛上遇到的艰难险阻相比，是微足不道的。
During the study, I often encountered some difficulties, but this is difficult to live alone with Robinson in the face of difficulties and obstacles on a desert island, is not enough to micro-Road.
手术是治疗乳腺癌最基本和最有效的治疗手段，但以微转移和肿瘤细胞的播散形式的残留疾病常难避免。
Surgery is the primary and most effective treatment of breast cancer, but residual disease in the form of scattered micrometastases and tumor cells are usually unavoidable.
微网中的分布式电源常采用电力电子接口连接到微网，这增加了分布式电源接口控制的灵活性，减少了系统的惯性。
Most of micro sources in a MicroGrid are interfaced through power electronic converters. The interfaces of converters increase the flexibility of control but reduce the inertia of the MicroGrid.
微网中的分布式电源常采用电力电子接口连接到微网，这增加了分布式电源接口控制的灵活性，减少了系统的惯性。
Most of micro sources in a MicroGrid are interfaced through power electronic converters. The interfaces of converters increase the flexibility of control but reduce the inertia of the MicroGrid.
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