该模型由描述系统振动的双曲型偏微分方程组及相应的边界条件和周期性条件组成。
This model consists the hyperbolic partial differential equations, boundary conditions and cyclical conditions of the system.
然而，当在实验室的恒定条件下观察硅藻时，它们仍然表现出周期性的行为，继续按计划挖掘几个星期。
However, when diatoms are observed under constant conditions in a laboratory, they still display periodic behavior, continuing to burrow on schedule for several weeks.
他们探究了“周期性”和“结构性”失业之间的渐变过程和两者产生、转换的条件。
They explored the gradations between "cyclical" and "structural" unemployment, and the conditions under which one or the other arises or gives way to the other.
上面的方法不能用于负载特性分析，原因在于不能确定周期性的边界条件。
However, this approach cannot be used for analysis of load characteristics because it proves impossible to specify periodic boundary conditions.
对于系数具有周期性时，我们给出了渐进周期解存在并且唯一的必要条件。
In case the coefficients are periodic, we give some sufficient conditions for the existence and uniqueness of asymptotic periodic solution.
当随机任务到达流符合有界性或周期性统计规律时，本文给出了网络动态具有稳定的规则行为的判别条件。
When bounded or periodic statistics rules are met by these random arriving jobs, a sufficient condition for the considered system to be of regular behavior is given.
慢波系统一般采用周期性结构，其中传输的电磁波需要满足十分复杂的边界条件。
Slow-wave systems generally employ periodic structures, and the electromagnetic waves transmitted therein are required to satisfy very complicated boundary conditions.
文中分析了直接顶引起周期压力的原因和条件，提出了预防直接顶周期性压力灾害的措施。
The paper analyzes the reasons and preconditions of this periodical pressure, then preventive measures of hazards caused by immediate roof periodical pressure is suggested.
另外，还讨论了周期性谐振腔的热稳条件问题。
The thermostable conditions of Periodic resonators is also discussed.
即使在实验条件下加热板内各层温度，使其呈周期性波动，但室内地板表面温度分布仍然非常均匀。
Although the temperature inside the panel fluctuated periodically in the experiment, the temperature on the surface of the panel was basically uniform.
在不考虑其它因素影响的条件下，细纱断头率在一昼夜内存在着周期性变化的现象。
Neglecting the influence of other interfering factors. it is found that the end breakage rate varies periodically round the clock.
通过引入周期性边界条件，在立方体单元内模拟混凝土中集料和界面的分布。
By introducing periodic boundary conditions, the distribution of aggregates and ITZs in concrete is simulated within a cubic element.
滑移边界条件下的模拟结果具有良好的周期性，各个周期的过渡性也更加平滑，与实际情况更加接近。
The simulation has good period property, the transition between each period is more smooth and is more close to the real result.
气候条件的周期性变化可引起湖平面、沉积物供给和沉积物类型的变化，从而控制湖盆沉积充填和湖平面的变化。
Cyclical changes in climate conditions could cause the changes of lake level, sediment supply and sedimentation types, then impact the lake basin deposit and the lake level fluctuation.
我们用离散元(DEM)方法研究了这种运输机在水平配置时的流动机制，施加周期性边界条件并忽略流动介质的存在。
We investigate the flow mechanism of this conveyor in a horizontal configuration by a discrete element method (DEM), applying a periodic boundary and omitting the existence of fluid medium.
内容提要：由于受气候条件、节假日、人们的风俗习惯、人口和国民经济增长等因素的影响，客运量呈现出周期性的增长趋势变化。
Abstract: Due to weather conditions, holidays, people's customs, population and economic growth and other factors, the volume of passenger traffic shows a cyclical growth trend.
证明了在一定条件下，热源供热量周期性变化引起的室内温度的波动幅度有限，不影响供热质量。
It is proved that under certain conditions, the periodic change of heat supply from heat source has caused little fluctuation in room temperature, and will not influence heat-supply quality.
周期性太长，时效性太差，受条件制约太多等等。
The periodic is too long, the time limited efficacy is very bad, The check and supervision condition are too many etc.
结果：不同的周期性机械拉伸条件影响C2C12细胞的增殖，拉伸的频率对C2C12细胞增殖有较大的影响。
Results: The proliferation of C2C12 cells was varied from different stretching conditions, especially in different stretching frequencies.
固壁条件下多根椭圆粒子的平均沉降速度大大小于周期性壁面条件下的平均沉降速度。
The average sedimentary velocity under no-slip wall condition is largely less than that under periodic wall boundary condition.
为了充分考虑旋翼尾迹对流场的影响，采用周期性边界条件和由动量理论导出的远场边界条件。
To incorporate the important effects of the rotor wake, the far-field boundary condition derived from the rotor momentum theory and the cyclic boundary condition have been used.
在现有工艺条件下，精制氯化铵母液循环使用必有其限度，以此决定母液循环使用的周期性，并推导出母液循环周期的定量表达式，为其污染控制和现场环境执法提供便利。
Under present process condition, the reuse of mother liquor from industrial ammonium chloride has a limitation that determined the cycle period of the reuse of mother liquor.
本文进一步研究了这些系数随时间变化而趋于一个定值或在某一常数附近作周期性振荡，并给出容易检验存在唯一全局渐近稳定的正周期解的条件。
In this article we further study the cases in which the coefficients of the model vary with time and tend to definite values or vibrate periodically near certain constants and...
而在病理条件下心率变异性小，呈周期性趋势。
It means that the HRV is greater in control conditions than in abnormal conditions.
结果表明：摇摆条件下摩擦阻力系数随时间周期性波动，波动周期等于摇摆运动周期。
The results show that the friction coefficient in rolling condition fluctuates with time and the period is equal to that of rolling movement.
结果表明：摇摆条件下摩擦阻力系数随时间周期性波动，波动周期等于摇摆运动周期。
The results show that the friction coefficient in rolling condition fluctuates with time and the period is equal to that of rolling movement.
应用推荐