地球轨道的周期性变化会影响地球的气候。
Periodic changes in Earth's orbit could affect Earth's climate.
鼻翼两边的阻力呈现一种有规律的周期性变化。
There is a regular cycle of change in resistance between the two sides of the nose.
不过，也有人说，这只不过是一次周期性变化。
But there are those who say that this is just another cycle.
通过控制器控制某一变量或函数进行周期性变化。
Periodic change imposed on a controlled variable or a function by a controller.
研究表明，这些差异与激素水平的周期性变化有关。
Some studies have suggested that these differences are associated with the cycle changes of the hormones level.
生猪产业的一个主要特征是产量和价格的周期性变化。
Cyclical fluctuation of production and price is the main characteristic of pig industry.
光合作用的日变化与内部生理状态的周期性变化有关。
The daily changes of photosynthetic rate is associated with the cyclic alterations of internal physiological periods.
在北极点与大约55度N纬圈之间气压分布的周期性变化。
A periodic change in the distribution of pressure between the North Pole and a circle at about 55degree.
当地降水量的多年周期性变化决定了地下水位的多年动态。
The dynamic variations of groundwater level are subject to cyclic variation of precipitations.
稚贝足丝的分泌，具有明显的日周期性变化，昼夜差异极显著。
The secrete of young shellfish foot-thread has the obvious sun periodicity change, the difference of its day and night is marked.
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。
This paper analyses the area distribution and periodic variation of intensity of the urban heat island in southeastern coastal cities of Fujian Province.
地幔圈形状周期性变化使地壳产生势能（位能）力导致地壳运动。
That the cyclical change of the shape of the mantle produces potential energy force in earth's crust results in crustal movement.
因窑炉转动、物料和热电偶周期接触，引起测量温度周期性变化。
When a kiln rotates, the thermocouple periodically contacts the hot feed solids materials.
任务将花费三年半时间盯住类似目标，搜索亮度周期性变化的恒星。
The mission will spend the next three-and-a-half years staring at the same stars, looking for periodic dips in brightness.
海潮及受其影响的海岸带地下水位具有复杂的周期性变化和趋势性变化。
Complex periodic changes and trending changes can be observed in tide and groundwater level affected by the tide in coastal aquifers.
而在不同纵向位置，这些同心环的强度分布是不同的，且是周期性变化的。
However in different longitudinal position, the intensity distribution of these rings is different and varies periodically.
计算结果表明，对周期性变化的传热过程，采用这种数值分析方法是适宜的。
The result shows that the numerical analysis method used in our study is suitable for the periodic heat transfer process.
研究在辐射和对流同时作用下肋根温度作周期性变化时矩形肋片的传热特性。
The heat transfer performance of a rectangular fin during periodic fin base temperature change is studied under simultaneous action of radiation and convection.
当这束光扫过地球，我们就能观测到周期性变化的射电信号，就像一个灯塔。
When this cone sweeps across the line of sight to Earth, we see the radio emission brighten regularly, just like a lighthouse.
没有能流通过节点（或腹点），但在其他各点，能流密度随时间作周期性变化。
There is no current flowing through any node(or antinode. ), but the current density changes periodically with time at other places.
此外，统计还显示出许多耀斑爆发前谱斑亮度可能有着1—2天的周期性变化。
Besides these, the statistics tells us that flocculi brightness may have 1-2~d periodic changes before the outbursts of flares.
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.
在某些细胞系中，细胞表面抗原性或对表胚凝集素的反应方面有相近似的周期性变化。
In some cell lines there is a similar periodicity in changes of cell surface antigenicity or response to wheat germ agglutinin.
研究结果还表明：海风和陆风垂直方向呈非对称分布及热力环流具有明显的周期性变化。
Studies suggest that the vertical distribution of the breezes is asymmetric and the thermal circulation exhibits marked periodic variations.
由于地球上任一地区接收到太阳辐射能量的周期变化，导致地球表面温度的周期性变化。
As a result of the earth's rotation on its axis, the radiant energy received by any area of the earth surface from the sun varies periodically.
气候降水是该区水资源的主要来源之一，也是影响该区水资源周期性变化的主要因素之一。
Climate rainfall is not only one of main sources of water resources, but also one of major factors affecting periodic change of water resources over this region.
在事务数据库中的周期性一般关联规则可以揭示类的不同层次之间的关系和呈现周期性变化。
Discovering cyclic generalized association rules from transaction databases can reveal the relationship of different levels of the taxonomies and display cyclic variations over time.
在事务数据库中的周期性一般关联规则可以揭示类的不同层次之间的关系和呈现周期性变化。
Discovering cyclic generalized association rules from transaction databases can reveal the relationship of different levels of the taxonomies and display cyclic variations over time.
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