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- However, periodic fluctuations still exist in the attitude and attitude rate due to the cyclic disturbances, such as aerodynamic torque. 然而,由于气动力矩等干扰力矩具有一定的周期性,通常使空间站的姿态和姿态速率呈现一定的周期性波动。
- Area electric power charge is variable peculiarly with periodic fluctuation. 区域电力负荷具有特殊的变化规律。
- Parametric rolling is a kind of the resonance phenomena of ship motions, caused by the periodical fluctuations of stability parameters of ships in waves. 参数横摇是指船舶在波浪中由于自身系统中稳性参数的周期性变化所引起的船体梁横摇共振运动现象。
- The periodic fluctuation of economic development probably causes fluctuation of electricity demand. 摘要经济发展的周期波动必然引起电力需求的波动。
- Like macroeconomy, the development of real estate industry also shows a phenomenon of periodic fluctuation. 与宏观经济运行过程中一样，房地产业也客观存在着周期波动现象。
- The DO curve of DW was routine, while that of PW showed proper periodic fluctuant. 试验中无毒生活污水的DO曲线符合常规变化,有毒制药废水的DO曲线出现了特有的周期性波动。
- The depth groundwater table, affected by irrigation greatly, changes seasonally and periodic fluctuation between tiptop and lowest groundwater table regularly. 地下水埋深受灌溉的影响呈季节性升降变化,最高水位和升降范围年际间保持相对稳定。
- The energy density of space during the inflationary period fluctuated because of the intrinsically statistical quantum laws that govern nature over subatomic distances. 由于支配次原子范围物理之量子定律的统计特性，使得空间的能量密度在暴胀阶段不停地起伏。
- The results showed that the numbers of the Taxus yunnanensis population was is very limited, and had an obvious period fluctuation companying the growth of the population. 结果表明：云南红豆杉的种群数量少，种群发育过程中具波动性，但仍属稳定型种群。
- That period was a bright page in the history of Chinese literature. 那个时期是中国文学史上光辉的一页。
- Let us hope that the period of this injustice will be over soon. 让我们希望这个不公正的时期很快结束吧。
- Childhood is a period of rapid growth. 幼年是生长迅速的时期。
- He consulted the chronicles of the period. 他参考了这一时期的编年史。
- The model overcomes the unpredictability due to monotonicity and periodical fluctuation of freight volume. 该模型克服了货运量的单调性和周期波动性给预测带来的困难。
- The repetitive control law is introduced to suppress the periodical fluctuation,and the stability condition of the repetitive control system is given. 采用重复控制方法,分析了系统的稳定条件,设计重复控制器,实现对此类波动力矩的有效抑制。
- He had to decide within a given period. 他得在一定时间内作出决定。
- She has a detailed knowledge of this period. 她对这段时期的情况了解地相当详细。
- In that period auto sales hit a14-year low. 这时期汽车销售量达到14年来最低水平。
- In this period, unemployment reaches record levels. 这段时间的失业人数又达到了创纪录水平。
- The obvious periodical fluctuating phenomenon exists in practical economy operation of real estate industry, which is the same with other industrial economy. 摘要与其他产业经济一样，房地产业在实际经济运行中也存在着较为明显的周期波动现象。
