许多欧洲国家和日本的生育率已经下降到人口置换率以下，这让人们担心，劳动力短缺和生产力下降将威胁生活质量。
Fertility rates in many European nations and Japan have dropped below the replacement rate, causing concern that shortages of labor and productivity could threaten the quality of life.
目的评价国产米力农对二尖瓣置换术后低心排患者血液动力学改变的临床效果。
Objective To evaluate the hemodynamic effects of milrinone in patients after mitral valve replacement.
以厦门市某工业园项目实际工程为背景，对试验区夯沉量、地表隆起及动力触探检测结果进行分析，得出强夯置换法处理工程软弱地基达到了预期的加固效果。
Taking the actual project as an example, based on the sinks of the tamped area, the apophysis and the dynamic penetration result, this technique can achieve the anticipated reinforcement effect.
目的观察人工关节置换术中充填骨水泥对血液动力学的影响。
Objective To investigate the effect of acrylic cement implantation on hemodynamics during the artificial joint replacement.
目的比较异丙酚和咪唑安定静脉复合麻醉对心脏瓣膜置换手术患者麻醉期血液动力学和氧代谢的影响。
Objective To compare the hemodynamic effects and oxygenation state of propofol and midazolam combined with fentanyl for total intravenous anesthesia in patients undergoing cardiac valve replacement.
对于块石回填区域，采用了强夯置换法加固。强夯置换法同时还具有动力固结效应。
For stone backfilling area, adopt dynamic replacement method, which simultaneously has dynamic consolidation effect.
详细讨论了活化剂对钴置换热力学及氢析出动力学的作用，以及主要工艺参数对净化结果的影响。
The effect of activators on cobalt cementation thermodynamics and hydrogen evolution kinetics, as well as the influence of main technological parameters on purification result are discussed in detail.
结论双叶机械瓣对二尖瓣置换术患者的血流动力学影响优于倾斜碟瓣。
Conclusion Bileaflet valve has a better hemodynamic influence than tilting disk valve in on patients with replacement of mitral valve.
无论何种模型的植入生物瓣膜，主动脉瓣置换术的主要目的是改善血流动力学状况。
Regardless model of implanted bioprosthesis the primary purpose of aortic valve replacement is to improve hemodynamic conditions.
讨论了热力学、物质平衡和动力学原则在固态置换反应原位合成复合材料中的应用。
The applications of the principles of thermodynamics, mass balance and kinetics to the synthesis of in situ composites through solid-state displacement reactions has been discussed.
讨论了热力学、物质平衡和动力学原则在固态置换反应原位合成复合材料中的应用。
The applications of the principles of thermodynamics, mass balance and kinetics to the synthesis of in situ composites through solid-state displacement reactions has been discussed.
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