查询词典 fluctuated

The experimental results showed that the frictional factor periodically fluctuated with the time variable, and its amplitude was obviously affected by the change of Reynolds number and pipe diameters. The amplitude and average value of frictional factor both decreased with the increase of Re number, but the bigger the tube diameter was, the larger the amplitude of frictional factor was.

经实验研究发现，试验段内的摩擦阻力系数随时间变化有明显的周期性，雷诺数增加导致摩擦阻力系数的波动幅值降低、平均值减小，管径越粗使得摩擦阻力系数边的波动幅度越大。

The individual density was 4.77 inds. per gram dry soil. The results indicated that the number of soil nematode fluctuated significantly with season, the number of soil nematode in autumn is significantly more than that in summer and in spring. Shannon-Wiener index, Pielou index, Margalef index and Trophic diversity index were used in analyzing the diversity of nematode community, ranking Cc＞Pm＞Clc, while Simpson index ranking Pm＞Clc＞Cc. The value of f/b, MI index, PPI index, MMI index, MI2-5 index, SI index and EI index were used in analyzing the characteristics of the functional structure of the nematode communities, ranking Cc＞Pm＞Clc, while PPI/MI value ranking Clc＞Pm＞Cc. It showed that the Clc was disturbed significantly.

研究结果表明，土壤线虫数量存在明显的季节波动，秋季明显高于夏季和春季；土壤线虫群落多样性指数、均匀度指数、丰富度指数和营养类群指数大小依次为阔叶林、针叶林和混交林，而优势度指数却表现为：针叶林＞混交林＞阔叶林；土壤线虫群落营养类群f/b值、MI 指数、PPI 指数、MMI指数、MI2-5指数、SI指数和EI指数均表现为：阔叶林＞针叶林＞混交林，而PPI/MI指数则表现为：混交林＞针叶林＞阔叶林，表明混交林受干扰明显；土壤理化特征与线虫数量、属数、生态指数间也存在明显相关关系。

In general, the proportions of males and intersexes in progeny of T. pretiosum increased with treated generations increasing, but fluctuated within two close generations. The mean number of eggs laid by treated T.

并且随着处理世代的增加，雌雄嵌合体和雄蜂的比率整体上呈现出上升趋势；但在每两个相邻处理世代之间却出现了上下波动不定的现象。

The system uses PID controller and fuzzy controller to design automatic control loops, a study of fuzzy three-element feed-water control system for a CFB municipal waste incinerator is introduced. The incinerator is faced with problems such as large-scale fluctuation of furnace heat load and low regulation resolution of main control feed-water valve. The fuzzy logic control system is applied to modulate PI control parameters according to steam drum water level to fit fluctuated heat load, the inner and outer control loops are realized in an asynchronous way to effectively decrease regulation time and improve regulation precision.

针对垃圾炉炉膛负荷波动较大，同时给水调节阀门执行机构的调节精度较低的现状，在传统三冲量串级汽包水位控制方式的基础上，采用模糊控制策略对内、外串级回路的PI控制参数进行分区域调整，强调了PI参数在被控参量处于不同范围时的分离作用，同时内、外控制回路采用异步控制方式，浙江大学硕士学位论文从而有效地减小了被控参量的调节时间，提高调节精度，使水位波动控制在△为士12~范围内。

The modern industry boilers all develop in the direction of the large capacity high parameter, the general boiler is the larger in capacity, person who holds water of steam dome relative and light, water demand fluctuated to allow less .

现代工业锅炉都向着大容量高参数的方向发展，一般锅炉容量越大，汽包的容水量就相对越小，允许波动的蓄水量就更少。

Life-cycle process, various types of transferase activity has Change fluctuated.

生命周期过程中，各式转移酶活性有增减。

In the refeeding animals after infusion of sodium propionate, leptin and NPY were fluctuated.

饱食状态下，门静脉灌注丙酸钠后，三种静脉内瘦素和NPY水平均呈现先降后升的变化趋势，在不同的个体，变化范围变异较大，故无统计学上的差异；胰岛素在灌注后，迅速达到峰值，与灌注前相比，差异极显著，且门静脉内胰岛素水平为颈静脉内的2倍以上；皮质醇的水平也迅速升高，峰值出现在45min。

The procedure of Guang~ i~s-2-interracial economic amalgamation is fluctuated especially on the aspect of declinations for some ethnical the process handicraft departments.

总体来看，近代广西手工业融合现象较为普遍，但在许多边远和落后地区，由于缺乏外界刺激，经济融合进程十分缓慢。

As shown in the past decades, the market fluctuated dramatically in the demand and price. Furthermore, downstream industry of p-xylene required continuously improved purities, 99.2% in 1970's to 99.8% in 1990's.

再过去几十年中，市场需求与价格呈现剧烈变化，同时，基於石化工业下游厂家的需求，对二甲苯纯度亦由1970年代的99.2%，提高到1990年代的99.8%。

Although oil prices continue to set new records in nominal terms, in real terms they remain well below the peak established in the oil shock of 1979, having generally fluctuated within a broad band of about $20–40/bbl.

尽管名义油价达到了新记录，但实际价格仍低于1979年石油冲击时的最高水平，一直在20到40美元之间徘徊。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。