| 摘要 |
<p>The dispenser has a cylinder (C) connected through a valve (V) to a foamer (F), where a detergent is mixed with air to form foam, which is dispensed through a dispensing chamber (U) provided with a nozzle (N). A piston (S) airtightly sliding in an additional cylinder (C) communicates with outside through a one-way valve. A duct (D) extends between the cylinder (C) and the dispensing chamber.</p> |
