Valve Disadvantages: the valve is prone to leakage around the stem, especially in-board leakage when a vacuum is pulled on the valve outlet.
阀门的缺点：当阀门排气口处是真空时，阀门在阀杆附近容易泄漏，特别是内部泄漏。
One day, people came and pulled up the Flax's stem.
突然有一天，人们来到这里把亚麻的根拔了出来。
From this came the mass of stringy stem-like supports that form between the two plates as they are pulled apart, as a logical conclusion of the idea of the separation of the two horizontal planes.
由此，才诞生了大量的粘性干样支持，形成两大板块之间，因为它们分开，作为一个合乎逻辑的结论的想法分离的两个横向飞机。
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