Junction with the compressed air pipe and the diameter and length increase, the pressure will drop.
随着压缩空气管和连接处的直径和长度的上升，压力将下降。
The ballute is internally provided with a soft intake pipe which is connected with the compressed air chamber in the truck.
气伞内置软状进气管，与车内压缩空气室连接。
But engineers are hoping that their pretesting—using compressed air to fire a ping-pong ball down the pipe, Gillies says—will prevent such a mishap.
但工程师们希望他们的预测试——使用压缩空气将乒乓球注入管道——也许可以避免此类事故， Giilies 认为。
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