Trent reverse reflection device is adopted to offset the effect caused by beat and cross sliding during displacement or vibration and to enhance measurement sensitivity and accuracy nearly one time.
The mathematic model of concrete dam displacement trend is established, considering reservoir level fluctuation, tem-perture, timeeffect and other factors.
混凝土坝位移的季节周期趋势分析法是对大坝变形资料分析处理的新方法。
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Objective: to monitor the curative effect of oral warfarin for the patients after heart mechanical valve displacement by the prothrombin time (PT).