Accumulator Tank: a sealed air chamber combined with a water reservoir provides expansion volume to reduce pump cycling from minor pressure changes and give a steady flow.

压力鼓：你个密封的空间结合水箱来提供充足的空间来减少泵循环时较小的压力改变和稳定的水流。

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Shashank Joshi, an associate fellow of the Royal United Services Institute, a British think-tank, says the capital is not hermetically sealed but is effectively under siege.

英国智库皇家联合服务研究所的一名副研究员沙先科•乔西说，首都并不是牢不可破，它正受到有力的围攻。

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The aircraft track sealed tank type, completely solve the water, chips, dust on the track pollution, erosion, the overall efficiency than the ordinary type increased by 10 times.

该机轨道采用密封油槽式，彻底解决水、切屑、灰尘对轨道的污染、腐蚀、整体比普通型使用效率增加10倍。

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