During the process of using the Ram Blowout Preventer, the sealing effect is the key.

闸板防喷器在使用过程中，密封效果是关键。

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Study was conducted to evaluate the effect of stress, which is caused by chase and ram on the innate defense activity of spot tail bass.

研究了由追著驱赶引起的胁迫对斑尾鲈先天性防御能力的影响。

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Results:the effect of TNC was superior than that of RAM(P < 0.05), and the improvement of blood rheology, blood volume and mean blood velocity of vertebral artery corresponded to the curative effect.

结果：三步针罐组疗效优于常规针灸组（P<0.05），患者椎动脉血流量、平均血流速度、血液流变学指标的改善情况与临床疗效相一致。

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