查询词典 fluctuation

The high kurtosis levels of transverse velocity fluctuation in laminar sublayer are foundand studied for the first time.

研究结果表明，这种强脉冲现象在湍流的产生与维持中起着重要作用，是近壁湍流自维持机制的重要事件。

Theδ〓O fluctuation showed that during the Last Glaciation there existed at least seven warm and five cold climatic fluctuations or events in the east Tibetan plateau, and that during the Last Interglacial Age there existed clearly 5 climatic substages, namely 5a to 5e, among which substage 5e was the warmest climate period, but 5a was an optimum episode of moisture and heat combination.

对末次间冰期及末次冰期气候特征研究表明，青藏高原东部末次间冰期内部存在着5个十分清晰的气候亚期，其中5a、5c、5e三次暖事件以5e温度最高，但水热配置最好的是5a。

The sensitivity of the superconductor temperature sensor was very high and the time constant of it was very small, thus, it could be used to measure the tiny temperature fluctuation in superfluid helium.

超导温度传感器具有很高的灵敏度和很小的时间常数，故能测量出超流氦浴中很小的温度变化。

A superconductor temperature sensor was developed to measure the tiny temperature fluctuation in superfluid helium.

论文在实验中设计了一个超导温度传感器来测量微小的温度变化。

At the same time the power follow control strategy restricts the switch frequency and fluctuation of engine working point in the appropriate range .

这种控制策略同时还对发动机的开关次数以及工作点的动态波动等不利于发动机提高燃油经济性和降低排放的情况进行限制。

The water flow movement basic equations of transient process caused by small fluctuation in the inclined roof tailrace system were deduced, and then analyzed and calculated.

推导了变顶高尾水系统小波动过渡过程水流运动的基本方程，对基本方程进行分析与求解，并以某电站为例，探讨了变顶高尾水系统小波动过渡过程的基本规律。

In this paper, beginning with the basic equations of hydrodynamics, turbine and governing system, the author deduced the basic equations of transient process caused by small fluctuation in the inclined ceiling tailrace, then analyzed and calculated the basic equations.

从水力学、水轮机、调速器的基本方程出发，推导了变顶高尾水系统小波动过渡过程的基本方程，并对其进行分析与求解。

But, the psychology anticipated often meets is not alone plays the role, often coordinates other aspect factors the change enlargement price margin of fluctuation, thus has created the massive prices bad opportunity for the gold stock and the on-hand merchandise investment.

但是，心理预期往往会不是单独起作用，往往配合其他方面因素的变化放大价格的波动幅度，从而给黄金期货和现货投资创造了大量的价差机会。

The temperature fluctuation resulted from the difference of coolent temperatures from different channel in the core of the reactor may cause thermal fatigue and heating defect of the solid structure.

在核电厂中，由于来自核反应堆堆芯不同通道冷却剂温度存在差异，产生温度振荡现象，可能引起固体结构的热疲劳与热老化。

Objective:to study the epidemiologic characteristic of mortality of malignant tumors in zhongshan city.method:selecting the investigated datum of mortality of malignant tumor in zhongshan city as sample uses sas statistics software to analyse and forecast the mortality by time series.results:morlality of male malignant tumor and both male and female malignant tumour showed the risen trend from 1970 to 1989.the trend will be kept in future.both will be separately risen to 121.05/105 and 83.92/105 in 2 000.mortality of female malignant tumour will be kept in about 43.59/105 in 2000.couclusion:mortality of both male and female malignant tumor takes on the trend of diffirent change.the male showed risen trend;the female showed the fluctuation of non-trend random.rising mortality of malignant tumor greatly threaden the crowd health.

目的：研究中山市恶性肿瘤死亡率的流行学特点，为制定防治计划提供依据。方法：以中山市恶性肿瘤死亡率调查资料为样本，应用sas统计分析软件对恶性肿瘤死亡率进行时间序列分析与预测。结果：1970～1989年男性恶性肿瘤死亡率和男女合计恶性肿瘤死亡率均呈现上升趋势且有继续保持的趋势。到2000年将分别上升为121.05/10万和83.92/10万左右；女性恶性肿瘤死亡率呈现无趋势的随机波动且将继续保持下去，到2000年保持在43.59/10万左右。结论：中山市男女恶性肿瘤死亡率呈不同变化趋势，男性恶性肿瘤死亡率呈现上升的趋势，女性恶性肿瘤死亡率呈现无趋势的随机波动。恶性肿瘤死亡率的上升对人群的健康构成重大威胁。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。