为了防止测压管嘴被微细颗粒堵塞，在管嘴处以低流速向床内注入气体。
To prevent clogging of the pressure tap by fine solids gas is bled into the bed at low velocity at the taps .
真空预压处理吹填土地基的方法应用广泛，但塑料排水管经常会被吹填土细颗粒堵塞。
The dredger fill foundation is popularly treated by vacuum preloading. But the drain pipes are always clogged by fine particles which cause the construction to be delayed.
他大概猜想这种物质具有固体颗粒会堵塞小孔。
He probably suspected it had solid particles that would block the holes.
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