| 摘要 |
A system for communicating a substance from between substance communicating devices. A substance switch is provided for selectively transferring the substance from a first substance communicating device, such as a host or other substance source to a first substance communicating device, such as a such as a substance consumer. The substance switch is activated to communicate the substance between the first substance communicating device and the second substance communicating device in response to movement of a component associated with one of the substance communicating devices.
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