防喷管安装在采油树的顶部，被试压，把工具放入到防喷管中，然后防喷管加压到与井眼压力一致。
The lubricator is installed on top of the tree and tested, the tools placed in the lubricator and the lubricator pressurized to wellbore pressure.
以此方法模拟了喷管和二维叶栅的多个非平衡态凝结流动，计算和试验测量的压力分布较好地吻合。
The nucleating flows in nozzles and cascades are simulated by this method and good agreement is obtained between experiment and calculation.
另外，蒸汽夹套喷管被供汽压力下的蒸汽完全包围，进一步减小因辐射损失造成的冷凝。
What's more, the steam-jacketed steam distribution manifold completely surrounds the distribution pipe with steam at supply pressure, further reducing condensation due to radiation loss.
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