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The morphology and acrosome reaction of sperm may be two important parameters to evaluate the function of fertilization.

因此，精子形态分析和顶体反应二项参数，在自然周期和IVF周期中，对受精功能的评价有着不同的参考价值和意义；同时，在人类辅助生殖技术实施过程中可以作为选择不同辅助生殖技术的依据。

Objective To investigate the relationship between ovum fertilization rate and sperm morphology, acrosome reaction in IVF and to explore the influence of parameters of sperm on fertilization rate.

目的 研究体外受精(in vitro fertilization，IVF)中精子形态、顶体反应与卵子受精率之间的关系，分析精子各参数在IVF受精率方面的参考意义。

A weighting spectrum differing from WIMS 69 group library is used to calculate group constants. The importance of actinides and structure material is consided during the selecting of input parameters according to the above sensitivity analyse.

同时，参考前面灵敏度分析的结果，在研制WIMS82群库时，充分考虑了灵敏度较大的錒系核素和结构材料核在温度、参考σ〓值、Goldstein-Cohen λ〓值等参数的选取时应具有与〓U、〓Pu同样重要的地位。

As the application of q-MoI,14,in Actinium and 15,in rare-earthrotational energy spectra of even-even nuclei have been calculated by therotational formula of ND,and the calculated results and the parameters'values have been discussed.

应用SD核转动惯量q—公式，计算了A～190和150区70多条SD核带E2跃迁γ能谱，动力学转动惯量随转动频率的变化，讨论了转动惯量q—公式体现的多体相互作用效应、对力效应、Coriolis反配对效应和堵塞效应。

To the later, this dissertation has been done transient dynamic analysis, calculated the stress intensity factors changing with the damp of asphalt pavement, the cycle of load action and the parameters of pavement structure.

应力强度因子最大值随荷载作用周期的变化呈倒"S"状变化，在高频和低频荷载作用时，逼近静载作用时的应力强度因子值，在一定的频率出现最大值和最小值，但应力强度因子的变化幅度不大。

Pole-placement and Inner model tuning methods are discussed finally;(2) For the linear derivative action, several different tracker-differentiators are presented to improve the quality of the derivative signals;(3) A neural network tuning method is given for the nonlinear PID controller which includes the above tracker-differentiator;(4) For the linear integral action, a nonlinear pre-phase integrator is studied in order to decrease the phase delay problem; Simulation results show that the nonlinear PID controller including the pre-phase integrator posseses better performance in both fast and stable property, and strong ability of anti-disturbance;(5) A simple optimal criteria is introduced to optimize the parameters of the nonlinear PID controller based on the pre-phase integrator.

仿真研究表明，由此形成的非线性复合积分PID控制系统，具有快速而平稳的过渡过程和超强的干扰抑制能力；(5)采用物理意义简单明确的目标函数的优化设计方法，对上述非线性PID控制器进行参数整定，达到了满意控制典型工业过程的目的。通过对直线电机伺服系统的仿真研究，表明该种非线性控制器具有同时跟踪多个目标的优越性能。

Effects of system pressure,activation condition and other process parameters on the properties of activated carbon were studied.

讨论了体系压力、活化条件等过程参数对活性炭性能的影响。

Then, activation energy model parameters were extracted from devices with various channel length and film quality.

然后，利用变化不同的通道长度和不同的薄膜品质，来萃取出模型中的各个参数。

Firstly, this paper focuses on the research and theory of anti-seismic parameters of EBSF and active beam link, establish rational mechanism and yielding model of the structure, set forth the design principle and method of it.

本文首先对高层偏心支撑钢框架结构的抗震参数和耗能梁段进行分析研究，建立合理的屈服机制和屈服模型，阐述了其设计计算原理及方法。

Following up the change of some parameters in AC systems, it can regulate the active power transmitted by DC link and damp power oscillation in s...

在交流系统受到扰动后它通过跟踪交流系统某些参数的变化来调节直流输送的有功功率，从而达到阻尼整个系统功率振荡的目的。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。