And more importantly , in the distant future , depletion of the earth s resources , impacts of asteroids , abrupt changes of solar activities , etc . will force human to leave the earth and find a new home in the endless universe 因为长远来说，无论是地球资源枯竭小行星撞击，还是太阳的活动出现剧变也好，人类的活动范围终有一天要超越地球，向无垠的宇宙伸延。
However , in severe turbulence , abrupt changes in the altitude and attitude of an aircraft may occur and the pilot may momentarily lose control of the aircraft . for reporting and alerting purposes , moderate or severe turbulence is considered significant 强烈湍流则有可能令飞机的飞行高度及姿态出现突然转变，飞机可能会短暂失控。在发出预警或飞机报告方面，中度或强烈湍流均属于显著的湍流。
In chapter two we study the transport properties of a curved quantum wire , such as the mixture of transverse modes , suppress of conductance , local density , abrupt change of transmission phase and so on . these properties is compared to those of a perfect quantum wire 第二章分析了弧形量子线的模式混合，电导抑制，局域态密度，透射相位突变等性质，并将这些性质与理想直量子线进行了对比。
The abrupt change informatiom can be obtained through decomposing and reconstruction of the vibrating signal by wavelet packet ; therefore the fault condition of the hydro - generator unit can confirm and provide decision support for diagnosing the vibration fault of the unit 运用小波包分析对振动信号进行分解与重构，可以获得振动信号的突变信息，即可以获得机组振动的故障状况，从而?诊断机组振动的故障状况提供决策支援。
This paper points out the main factors affecting the abrupt changes of the lateral stiffness and shear forces near the transfer storey are the stiffness of peripheral tube and the level of transfer storey by the analysis of the abrupt changes in 10 types of tube structure 通过对10种带转换层筒体结构转换层附近刚度和剪力分布突变的计算分析，指出外筒刚度和转换层设置高度是影响带转换层筒体结构刚度和剪力分布突变的主要因素。
Arid an algorithm of parity residuals and the theory of residual vector probability - data fusion are used for detecting the abrupt change failure of srfcs , especially the failure of actuators ' failures and single control surface ' s failures 该系统是按照软件工程规范，采用等价空间法和残差向量的概率信息融合法研制和开发的，不仅能对飞行控制系统的突变故障作动器卡死故障和控制舵面损伤故障进行实时检测和隔离，而且具有良好的用户界面。
Moreover , the aid of gray interrelation analysis and the plural regression model are applied to discuss the reason of runoff decrease and abrupt changes . for over 40 years , under the background of climatic warming , river runoff of shaanxi - gansu - ningxia region has showed a generally reduction trend 40多年来，在气候暖干化的背景下，陕甘宁地区地表水资源变化总趋势为减少，表现为自1950年代末以来河川年径流量的显著减少倾向，而且贫水化也日趋严重。
The structural slope - break zones are defined as the depositional slopes abrupt change in geomorphology and developed widely in fault and foreland basins , the recognition of which is significant for predicting the distribution of depositional systems tracts , particularly the lowstand systems tracts which usually comprised economically important reservoirs in these basins 构造坡折带是由构造活动所产生的、对沉积作用具有长期控制作用的古沉积斜坡或古地貌突变带，在断陷或前陆等盆地中普遍发育，其识别对阐明盆内沉积体系域，特别是构成重要油气藏的低位域的分布和预测具有重要意义。
Vo _ 2 is a typical thermochromic material . with the increase of temperature , the semiconductor - to - metal transition will occur at 68 c ; with the abrupt change of vo _ 2 crystal structure , electrical resistance and optical index of refraction transmissivity and reflectivity will change , which results in great application potentials in many fields Vo2是一种相变型金属氧化物,随温度的升高,在相变温度( tc = 68 )发生从低温单斜结构向高温四方金红石结构的转变,同时,伴随着电阻率和红外光透过率的突变。
In this paper , features of decadal variability and the possible mechanism of sea - air system in the pacific are investigated by using upper - ocean temperature , heat storage and wind stress data , the main results are as follows : the most pronounce decadal sign exists at about 160 meter in depth in the western pacific . there are significant decadal abrupt changes in temperature from surface to deep in the subsurface at about 1980 . with different depth in the subsurface , there exist 4 types of abrupt change modes , their generation is closely related to the decadal sign which originates from the east of north pacific and propagates along the south - west subduct ion route 研究表明，太平洋次表层海温最强的年代际信号在热带西太平洋约160m深处，此信号在1980年前后从上至下，先后经历了一次显著的年代际突变过程，而且随深度的不同存在着四种不同的空间突变模态，这四种模态的形成与北太平洋海温异常的西南潜沉路径有着密切的联系。
