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1·So, instead of having the periodic variation of water, or the periodic variation of air density here we're talking about an electric field.

不像水或者空气密度的，周期变化，我们这里，讨论的是电场。

2·This paper analyses the area distribution and periodic variation of intensity of the urban heat island in southeastern coastal cities of Fujian Province.

本文分析了闽东南沿海城市的热岛强度的平面分布和周期性变化。

3·From experiments and analysis show that the daily periodic variation of temperature is one of the main reasons causing the daily periodic variation of phreatic water ta...

通过实验和分析证实，温度的日变化是引起浅层地下水位日变化的主要原因之一。

4·From experiments and analysis show that the daily periodic variation of temperature is one of the main reasons causing the daily periodic variation of phreatic water table.

通过实验和分析证实，温度的日变化是引起浅层地下水位日变化的主要原因之一。

5·Firstly, it directly influences the periodic variation of precipitation and air temperature, then influences the periodic variation of runoff based on the underlying surface.

天体运动直接影响降水和气温的周期变化，进而在一定的下垫面条件下，影响径流的周期变化。

6·In this paper, the observational data of Kizil Reservoir are analysed. We found out the creepage of E_2 Fault, and got the information for periodic variation caused by hoting the creep.

本文分析了黑孜水库形变观测资料，指出了F_2断层的蠕滑现象，同时获得由热形变引起的周期变化信息。

7·There are distinct differences of the trends of extreme temperature variation between different regions, but the periodic variation analysis show that the inter-decadal variations are consistent.

各区域的极端温度值时间变化存在较大差异，但是周期分析显示，各区域极端温度值的年代际周期振荡具有全省一致性。

8·The periodic solution can be bifurcated from equilibrium point with the variation of parameters.

系统随着参数的变化，从平衡点分岔出周期解。

9·The simulated extraction of weak frequency variation signal is carried out with the expressed Resonant frequency locking property when system transits from chaotic to great periodic motion.

利用系统从混沌状态到大周期转变时所表现出的共振锁频性质，进行了微弱频率变化信号的仿真提取。

10·An image pre-processing techniques based on Wiener filter and normalization of image brightness is proposed for weaken the influence of periodic noise and brightness variation.

提出维纳滤波与亮度归一化相结合的图像预处理技术，去除固定模式噪声和亮度变化的影响。