double valve spring 双气门弹簧
double-valve filter 双阀滤池
double beat valve 环形阀 ; 圆环阀 ; 双座阀 ; 双层阀
Double disc swing foot valve 旋启双瓣式底阀
double check valve 双止回阀 ; 双单向阀
double-valve 二瓣化
double slide valve 双动滑阀 ; 双滑动阀 ; 双滑阀
double safety valve 双安全阀 ; 双联安全阀
OBJECTIVE To summarize the clinical experience of cardiopulmonary bypass in double valve replacement.
目的回顾性总结主动脉瓣和二尖瓣联合瓣膜置换术的体外循环经验。
So a new design scheme about double valve compensation feedback control system based on adaptive load is proposed.
基于这种情况，本课题提出了基于负载自适应的流量伺服阀和电液比例溢流阀双阀反馈补偿控制方案。
Objective To investigate the influence of rehabilitation intervention on patients with cardiac double valve replacement.
目的观察康复护理对心脏双瓣膜置换术后患者早期康复的影响。
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