|
Abstract: The responses of shaft bow and their relationships with unbalanceresponses and mechanical or electronic run out are analyzed based on the theory of rotor dynamics.The responses of shaft bow are separated from the unbalance responses successfully
|
|
|
文摘:依据转子动力学理论分析了柔性转子弯曲响应的特征，在此基础上讨论了它与不平衡响应及机械与电气跳动量之间的关系，并利用转子在不同起车情况下的振动信息，有效地分离了弯曲响应和不平衡响应，求解出弯曲量与不平衡量的比值.提出了转子在恒定转速下，基于二维全息谱技术的热弯曲故障识别方法.研究结果表明，当弯曲量相位稳定而其幅值变化时，转子响应的二维全息谱初相点的切线是相互平行的，由此可以有效地实现转子热弯曲故障的识别与诊断. |
|
Abstract: The restoration of the riparian vegetation disturbed by human activities is one of the hotspots of watershed ecology.Through interpreting the images of Remote Sensing in 1985 and 1999,the basic information of forest resources of Lushuihe Forest
|
|
|
文摘:本文对两期遥感图像进行解译,并在GIS支持下提取露水河林业局主要河流两岸各缓冲区森林资源信息,经分析得到各类地物在1985年及1999年的变化趋势.结果表明:在河流沿岸对森林的采伐强度1999年较1985年明显减小,整体生态环境较1985年有所改善.在缓冲区1,2,3除中龄针叶林大幅度增加外,其它地物类型面积均减少,由此可以看出,在这三个缓冲区内针叶林得到了较好的恢复.在缓冲区4内,中龄针叶林、成熟针叶林、成熟阔叶林形成一个林龄梯队,有利于森林生态系统的稳定与功能的发挥,十五年间缓冲区4受到的干扰相 |
|
Abstract: The results of field experiment of comparison and demonstration in a large area showed that treating seed with imidacloprid and applying it in the late seedling stage and the early field stage can control small brown-back rice planthopper better
|
|
|
文摘:通过田间对比试验和大面积示范应用证明，播种时以吡虫啉拌种，秧田后期、本田前期喷施康福多、扑虱灵，可以较好地控制灰飞虱，从而有效地控制黑条矮缩病的流行。 |
|
Abstract: The reverse logistics is one of the contents of the circulatory economy, including rebuilding, refitting and reutilizing the merchandise in the circumfluence.
|
|
|
摘要：逆向物流是对回流中的商品的改造、整修和再利用活动，是循环经济的一个内容。 |
|
Abstract: The safety countermeasures of city open public space have been a key issue in urban planning study in many countries.
|
|
|
摘要:城市中公共开放空间的安全防范已经成为各国城市规划研究的课题之一。 |
|
Abstract: The safety management is one of the important content for the enterprise management on the mine.The safe civilized production can ensure production operation smoothly.Once safe production has been met several unfavorable factors at transform str
|
|
|
文摘:安全管理工作是矿山企业管理的重要内容之一，安全文明生产是生产经营活动顺利进行的保证，矿山企业在转机建制中安全管理工作遇到诸多不利因素，导致安全管理工作一度出现被动与无序的局面，只要各级领导和全体职工提高认识，转变观念，牢固树立“安全第一，预防为主”的思想，落实安全生产责任制，全方位开展安全生产标准化的创建，形成有效的安全文化氛围，安全管理工作必将对矿山企业的发展起到巨大的推动作用。 |
|
Abstract: The saturation behavior of stress current is studied.The three types of precursor sites for trap generation are also introduced by fitting method based on first order rate equation.A further investigation by statistics experiments shows that the
|
|
|
文摘:基于一阶速率方程,讨论了恒定电压应力下应力电流的饱和行为.通过对应力电流的拟合,发现存在三类缺陷产生的前身.更进一步的统计实验显示,在缺陷产生时间常数、击穿时间以及应力电压之间存在着明确的关系.这意味着缺陷产生时间常数能够被用于有效预测氧化层的寿命.与常规的氧化层击穿实验相比,基于缺陷产生时间常数的预测更快、更有效. |
|
Abstract: The sea-surface temperature change in October along the eastern Pacific equator is obviously counter-correlation to the western Pacific ridge line of the subtropical high of the coming early summer (June); The sea-surface temperature annual chan
|
|
|
文摘:历年10月东太平洋赤道附近的海温变化与来年初夏(6月)西太平洋副高脊线位置呈明显的反相关；其海温的年际变化对于青岛地区来年汛期降水具有敏感的指示意义。 |
|
Abstract: The seawaterdispersion of blue-green laser was analyzed in theory. Parallel experiments to variedwater samples were conducted, and an analysis result was given.
|
|
|
文摘:对蓝绿激光的海水散射进行理论分析,并进行不同水样的对比实验，给出了分析结果。 |
|
Abstract: The selection of refractory brick, the key points in building, drying and baking of brick lining of gasifiers are introduced in thepaper.
|
|
|
文摘:论述了耐火砖的选择以及砌筑、干燥和烘炉过程中应注意的问题。 |
|
Abstract: The seminar on Powder Metallurgical Technology across the Taiwan Straits was held in the middle of july, 1999 in Shanghai.
|
|
|
文摘:海峡两岸粉末冶金技术研讨会于1999年7月中旬在上海举行。 |
