The gas extraction effects is related to negative pressure of suction.
顶板瓦斯高抽巷的抽采效果与抽放负压直接相关。
Objective: To study clinical importance of casting pile-core crown with negative pressure suction silastic impressions and analyze reasons for the failure of routine impressions in pile-core crown.
目的：探讨铸造桩核冠常规印模过程中失败的原因，研究负压抽吸硅橡胶印模应用于铸造桩核冠的临床意义。
An animal experiment and clinical investigations have been done to choose a suitable negative pressure of closed suction drainage of the peritoneal cavity.
在动物实验和临床观察基础上，探讨腹腔负压引流适宜的负压值。
应用推荐