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The nonlinear oscillations in a continuous fermentation model with variable yield are studied by means of the qualitative theory of a differential system.

研究了微生物的生长、产物形成与基质的消耗有关的连续发酵过程，尤其是当发酵液中产物积累到一定程度，就会抑制其继续积累而带来的振荡现象。

The work is a generalization of the one done by \,which is useful in a further study of the nonlinear oscillations in continuous fermentation.

C rooke等人在研究单一菌种在连续发酵液中的生长时发现，如果发酵产物的生成速率

The describing function technique is mainly employed to predict the existence of constant amplitude oscillations of closed nonlinear systems and has been successfully used in many applications.

利用描述函数法将非线性元件线性化，以预测其极限环的发生，已成功的使用在许多的应用上。

The approximate solutions have advantages of simplicity,practicality,and higher accuracy,which is of practical value in calculating nonlinear oscillations .

利用线化和校正法所求得的近似解与数值解比较，具有简单实用、精度高、相对误差低等优点，在求解非线性振动中具有一定的实用价值。

Our results show that nonlinear Rabi oscillations of superfluid Fermi gases could happen due to the coherent properties of double-well potential.

结果表明，由于体系的相干特性双阱势中的超流费米原子气体可相互隧穿并产生非线性Rabi振荡。

Nonlinear Oscillations in Power Systems.

应用分支理论研究电力系统电压稳定。

Some topics for future research, such as nonlinear dynamical behavior of moving strings, vibration of moving viscoelastic strings, control of hybrid systems containing moving strings and control of nonlinear oscillations of moving strings, are suggested.

最后指出该研究方向今后需要研究的若干重要问题，包括运动弦线的非线性动力学行为、黏弹性运动弦线的振动、含运动弦线的混杂系统的控制和轴向运动弦线非线性振动的控制。

The research result shows that the sliding friction makes nonlinear oscillations about an average value when the depth of the particulate pile with 2 mm particulate diameter is greater than 0.5 to 2 times the diameter of the container.

研究发现，厚度为容器直径的0·5到2倍之间，粒径为2mm的颗粒堆，对探测棒的滑动摩擦力在一个平均水平上随时间作非线性振动。

The results are indicated that only the strength of gap junction is large enough, can the abnormal oscillation propagate to synchronize the other neurons around and the process is chaotic and complex;the nonlinear and complexity of the oscillations with strong strength of gap junction are larger than that of oscillation with weak strength of gap junction.

结果表明：只有电突触耦合达到一定强度时，异常振荡才能传导并引起神经元的同步振荡；传导活动是混沌和复杂的；在突触耦合强度较强时的神经元活动的非线性和复杂性要强于其在突触强度较弱时的。

Three results are received:(1) The population of neurons can synchronize when the strength of gap junction is large enough and the process is chaotic and complex;(2) The nonlinear and complexity of the seriously disorder oscillation are larger than that of slightly disorder oscillation in a 2-D network;(3) The nonlinear and complexity of the oscillations with strong strength of gap junction are larger than that of that with weak strength of gap junction.

结果表明：电突触达到一定强度时神经元群才能同步振荡，这种活动是混沌和复杂的；同一网络中异常节律较严重的神经元活动的非线性和复杂性要强于异常节律较轻微的神经元；突触耦合强度较强时的神经元活动的非线性和复杂性要强于其在突触耦合强度较弱时的。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。