Belling out the end of the tube will permit a freer passage of air.
把管端做成钟口状可使气流更畅通。
Indoor air at the separation was separated out by the export control scheduling, and the water still flows through the impeller around the outer edge of backwater hole, and mixed air inhalation tube.
在分离室内空气被分离出来，由出口管排掉，而水仍经左右回水孔流向叶轮外缘，并与吸入管空气相混合。
The two wires may be sealed into a glass tube and the air can be pumped out.
可以把这两根导线封入一根玻璃管内，并且可以把空气从玻璃管内抽出去去。
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