查询词典 fluctuation

Through the analysis and contrast between HM core and Dh core, combined with the data of AMS14C, six pollen assemblages were ploted Out. At the mean time, six stages about the vegetation change and climate fluctuation were rebuild. In addition, there were three sub-assemblages ploted out in the Atlantic period, Sub-Boreal period and Sub-Atlantic period, which reflected the less vibration of the large-scale climatic change. Pollen assemblage dominated by Concentricystes in the hard and green clay of late Pleistocene can make it sure that the hard green clay layer was formed by water.

通过对上海地区鹤鸣孔和东海1井两个钻孔进行孢粉分析鉴定和对比，结合AMS14C测年等资料，划分出了6个孢粉组合带，恢复了本区的植被演化和气候波动的6个阶段，对鹤鸣孔的大西洋期、亚北方期和亚大西洋期各划分出了两个孢粉组合亚带，反应了大气候环境下气候的次一级波动，在晚更新世晚期的硬绿色粘土中还发现了以环纹藻为主的孢粉组合，从孢粉学角度上证实了这一硬绿色粘土层&水成沉积&的观点。

Comparative study on two levels of population and modules of mutualspecies in the two stations demonstrates that feature index tend to diminish suchas height,tussock amplitude,size,number,density and dry weight;and thegrowth analysis index incline to increase such as RGR、ULA、chlorophyllcontent and effectiveness of plant multi-leaves of the populations and DULA、DUMR、DAGA and DRGRa of the modules;and the dynamic curves of thepopulations and the modules also tend to steadily increase along with thetemperature ascending,heat accumulation and combination between water andheat in moderate-temperature steppe from fierce fluctuation alongside naturalprecipitation in warm-temperature steppe,illustrating that the transformabletendency from increasing the numbers of tussocks and tillers in order to expandthe resource range to seize in warm-temperature steppe to steadily improve drymatter production function of the populations and the modules in moderate-temperature steppe.

两个不同热量型研究站点共有种种群与构件两个水平的比较研究表明：随纬度增加和气温降低，种群与构件高度、丛幅、大小、数量、密度和干重等特征指标趋于降低和减少，而种群RGR、ULA、叶绿素含量和植物多叶性与构件DULA、DUMR、DRGR和DRGRa等生长指标则趋于增加，种群与构件的生长动态曲线也从随天然降水而剧烈波动趋向于随气温升高、热量积累和水热配置状况而稳定增长，说明各共有种从暖温型草原区增加植物种群与构件的大小和数量以扩充资源利用范围向中温型草原稳定地提高种群与构件的干物质生产性能的方面转变的趋势；同时，物质与能量的分配也从较多地投资于繁殖器官产生大量后代以适应未来降水的不可预期变化趋向于同化系统的构建和干物质生产效能的提高以抵御低温和干旱对物种生存的威胁，充分显示出不同温度条件及其水热组合对植物种群形态结构和生长繁育模式的显著影响及其响应特征。

Their long term scale change and short term scale fluctuation are essential causes of formation and distribution of vegetation transition zone.

温度和水分的长时间尺度变化和短时间尺度波动是植被过渡带形成和分布的主要原因。

The transient state of torpedo electrical drive system,caused by torpedos steding, shifting, and the fluctuation of battery voltage, and thechange of the resistance in voyage, will influence efltire attitude and stability of thetorpedo immediately, as well as every parts of electrical propulsion system. Therefore,it is necessary to theoretically analyZe the transient state of torpedo electrical powerpropulsion system.

鱼雷电动力推进系统在鱼雷启动、变速及因电池电压的波动和在鱼雷航行阻力变化时而产生的暂态过程都将直接对整个鱼雷的姿态和稳定性产生影响，同时对电动力推进系统本身各个组件也将产生不同影响，因此有必要对鱼雷电动力推进系统的暂态过程进行一些理论分析。

In this paper, it is dealt with geomorphic analogue and time-spatial complex-response, using thalweg index and thalweg fluctuation to describe thalweg evolution (1960-1964) of the wandering reach in the Lower Yellow R. After Sanmenxia Reservoir operation.

本文供助地貌类比方法及时空复杂响应，采用深泓指数及河床起伏度，分析了三门峡水库运用后(1960-1964年)黄河下游游荡段的深泓演变情况。

In this paper, it is dealt with geomorphic analogue and time-spatial complex-response, using thalweg indexMsh and thalweg fluctuation Jbδ to describe thalweg evolution 1960-1964 of the wandering reach in the Lower Yellow R. After Sanmenxia Reservoir operation.

本文供助地貌类比方法及时空复杂响应，采用深泓指数及河床起伏度，分析了三门峡水库运用后1960-1964年黄河下游游荡段的深泓演变情况。

The tachyon pole of σ meson propagator is avoided by introducing the linear term in the self-interaction of σ meson, and the incompressibility of nuclear matter obtained in the mean field approximation is decreased by including the vacuum fluctuation of nucleon and σ meson.

我们通过引入σ介子的自相互作用，并考虑其中的一次项，解决了σ介子传播子的快子极点问题，并降低了平均场近似得到的核物质的不可压缩系数。

It is possible for this new device to eliminate the growth striations introduced by the fluctuation in pulling rate.

这种新颖的提拉装置可望消除由于提拉速率的起伏而导致的晶体生长条纹。

It is expected that this new method can eliminate the growth striations introduced by the fluctuation in pulling rate during crystal growth, and will be a powerful tool for studying the mechanism of crystal growth.

可以预见这种新型提拉方法既可以消除晶体提拉过程中由于拉速的不平滑而引进的晶体生长条纹，同时也可以作为研究晶体生长机理的有力工具。

Pneumatic control valves stiction is very common in process industry. A big fluctuation of process will be caused by stiction and productivity will also be lowered.

气动阀门的静摩擦现象在工业过程的控制中非常普遍，易引起控制系统的波动，从而影响生产的正常进行。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。