| 摘要 |
A foam generator comprises a hollow housing, a mesh installed inside, a nozzle containing a core with longitudinal canal, an appliance for connecting the longitudinal canal with the source of the pressurized liquid, and a bushing put onto the core. The core also contains a screen attached at a distance from the end-face of the core. The diameter of the screen is less than the internal diameter of the bushing. The bushing is capable for moving along the core.
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