Along with the change of market environment, firms and merchants will adjust the time arrangement and spatial distribution combination of transaction in order to achieve the minimum transaction.

交易者将随着市场环境的变化，调整交易时间配置和空间分布的组合，以求达到交易成本最小化。

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Objective: The aim of this study is to investigate temporal and spatial change patterns of osteocalcin in serum of young growing SD rats, in conditions of different functional treatment time spans.

目的：研究生长发育期大鼠，在不同时间段戴用功能矫治器，其血中骨钙素含量的昼夜变化规律。

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A new method to measure real-time sensitivity of Doppler lidar is presented, to solve the sensitivity uncertainty problem caused by the spatial and temporal change of aerosol during wind detecting.

提出了一种多普勒激光雷达测风灵敏度实时测量的方法，解决测风时因气溶胶时空变化引入的灵敏度测不准问题。

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