position change中文什么意思

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1. Our results show that pmd induces pulse broadening randomly in high bit - rate optical fiber communications ; the synchronous amplitude modulation control may correct directly any position change of timing jitter and soliton interaction , so the transmission distance and pulse quality will increase further
   研究结果表明对于高速率传输系统， pmd对脉冲的影响在时域上表现为脉冲形状的展宽，这种展宽是随机的；而同步幅度调制是在时域上，将发生形变的脉冲通过振幅调制，恢复原形，从而提高脉冲的传输性能。
2. The different distributions of surface level pressure , wind ( 10 meter ) and surface air temperature before and after the regime shift indicate that the increase of aleutian low , position change of its core , and the change of wind field in accordance , especially during the winter months , are the major dynamic reasons for the significant reduction of ice extent in bering sea
   结果表明： 20世纪70年代后期，海冰范围在白令海存在显著的均值突变现象，而楚科奇海在对应阶段则表现为更明显的变频现象；在突变点前后两个时段里，阿留申低压中心低压加强、核心位置偏移以及对应风场分布的变化是导致白令海海冰范围明显缩小的主要动力原因。
3. According to the study work of this paper , an automatic six - component strain gauge balance calibration system development scheme was put forwards : the system calibrates the balances in the ecs , and translates the loads to the bcs of the balances with measuring the balance ’ s position changes during the calibration
   本文根据1m高超声速风洞气动力试验的总体要求,提出了采用天平校准载荷地轴系全自动加载、并通过天平空间位移测量将校准载荷换算到天平体轴系( bcs )的六分量天平校准系统总体研制方案,并确定了详细的技术指标。
4. In the first section , the author describes the track of economic development in the historical perspective and the position changes accompanied with the track , in the section , there are still three subsections that focus in disadvantageous period , prosperous period and recessional period of east asian economy
   本文共分为三大部分：第一部分：主要从历史的角度考察了东亚经济发展的历史轨迹及与之相伴随的经济地位的变化。并把这一历史时期分为三个具体时期：即劣势地位时期、地位上升时期和地位下降时期。