Small Cars Struggling in the Market Passenger vehicle (including van) registrations reached 2,847,560 in the first half of 2007, a year-on-year increase of 22.1%. In terms of body types, sedan models
Hemispherical asymmetry in core dynamics induces degree-1 pressure variations at the core mantle boundary （CMB）, which in turn deforms the overlaying elastic mantle, at the same time keeps center of mass of the whol...Hemispherical asymmetry in core dynamics induces degree-1 pressure variations at the core mantle boundary （CMB）, which in turn deforms the overlaying elastic mantle, at the same time keeps center of mass of the whole Earth stationary in space. We develop a systematic procedure to deal with the degree-1 CMB pressure loading. We find by direct calculation a surprisingly negative load Love number h1=-1.425 for vertical displacement. Further analysis indicates that the negative hi corre- sponds to thickening above the positive load that defies intuition that pressure inflation pushes over- laying material up and thins the enveloping shell. We also redefine the pressure load Love numbers in general to enable comparison between the surface mass load and the CMB pressure load for the whole spectrum of harmonic degrees. We find that the gravitational perturbations from the two kinds of loads at degrees n〉l are very similar in amplitude but opposite in sign. In particular, if the CMB pressure variation at degree 2 is at the level of -1 hpa/yr （1 cm water height per year）, it would perturb the variation of Earth＇s oblateness, known as the J2, at the observed level.展开更多
司机在驾驶列车时,通过观察人机界面(D M I)显示的计划区速度曲线,了解列车前方不同区域的最高运行速度和变速点位置,监控和操作列车安全运行。介绍符合欧洲列车控制系统(ETCS)标准的人机界面,描述来自车载主机的最严格限速曲线(MRSP)与...司机在驾驶列车时,通过观察人机界面(D M I)显示的计划区速度曲线,了解列车前方不同区域的最高运行速度和变速点位置,监控和操作列车安全运行。介绍符合欧洲列车控制系统(ETCS)标准的人机界面,描述来自车载主机的最严格限速曲线(MRSP)与DMI显示的计划区速度曲线(PASP)之间的关系,并给出计划区速度曲线的绘制原理。展开更多
文摘Small Cars Struggling in the Market Passenger vehicle (including van) registrations reached 2,847,560 in the first half of 2007, a year-on-year increase of 22.1%. In terms of body types, sedan models
文摘Hemispherical asymmetry in core dynamics induces degree-1 pressure variations at the core mantle boundary （CMB）, which in turn deforms the overlaying elastic mantle, at the same time keeps center of mass of the whole Earth stationary in space. We develop a systematic procedure to deal with the degree-1 CMB pressure loading. We find by direct calculation a surprisingly negative load Love number h1=-1.425 for vertical displacement. Further analysis indicates that the negative hi corre- sponds to thickening above the positive load that defies intuition that pressure inflation pushes over- laying material up and thins the enveloping shell. We also redefine the pressure load Love numbers in general to enable comparison between the surface mass load and the CMB pressure load for the whole spectrum of harmonic degrees. We find that the gravitational perturbations from the two kinds of loads at degrees n〉l are very similar in amplitude but opposite in sign. In particular, if the CMB pressure variation at degree 2 is at the level of -1 hpa/yr （1 cm water height per year）, it would perturb the variation of Earth＇s oblateness, known as the J2, at the observed level.
文摘司机在驾驶列车时,通过观察人机界面(D M I)显示的计划区速度曲线,了解列车前方不同区域的最高运行速度和变速点位置,监控和操作列车安全运行。介绍符合欧洲列车控制系统(ETCS)标准的人机界面,描述来自车载主机的最严格限速曲线(MRSP)与DMI显示的计划区速度曲线(PASP)之间的关系,并给出计划区速度曲线的绘制原理。
