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.
采用特伦逆向反射装置，消除它在位移或振动过程中因偏摆或横移所带来的影响，使测量灵敏度和精度提高约一倍。
The mathematic model of concrete dam displacement trend is established, considering reservoir level fluctuation, tem-perture, time effect 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。
Objective: to monitor the curative effect of oral warfarin for the patients after heart mechanical valve displacement by the prothrombin time (PT).
目的评价采用凝血酶原时间(PT)监测心脏机械型瓣膜置换术后患者口服华法林治疗效果的意义。
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