短语词组短语ejection n phase 射血相slow ejection phase 减慢射血相;减慢射血期maximal ejection phase 最大射血期rapid ejection phase 快速射血相rapid d ejection phase 快速射血相reduced ejection phase 减慢射血期;翻译;减弱射血期;减弱射血期英语pre -ejection phase 射血前期 返回 ejection phase