Methods 12 cases of mammary cancer have been performed with small opening, big skin cut, double tube negative pressure drainage method. And compared with to traditional operation method.
方法对12 1例乳癌根治术采用小切口、大刀削切游离皮瓣、双管负压引流、并与传统手术方法相比较。
This method can be used for conventional heavy oil reservoir to calculate ultimate drainage radius and reasonable well spacing through starting pressure gradient.
将研究结果应用于普通稠油油藏，给出了利用启动压力梯度确定极限泄油半径及合理井距的理论计算方法。
The key technique includes the contact vacuum starter, pressure maintaining equipment for vacuum, the safety control in the vacuum drainage, the design and calculation method for the vacuum drainage.
真空接触启动、真空保压设备、系统安全监控以及系统的设计计算是真空排水系统的技术关键。
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