Method the filter efficiency, pressure, capabilities of inner environment and physiological parameters of the user were tested in different negative pressure conditions.
方法：在不同负压条件下对空气过滤器的过滤效率和阻力、舱内环境指标和使用者生理参数进行测试。
This article narrated the application of the negative pressure wave method in the leak detecting system of transporting-oil pipe.
主要讲述了负压波理论在输油管道泄漏监测系统的具体应用情况。
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。
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