Assertion: fuel cell's channel | /r/HasProperty | machined in bipolar plates
Facets:
value: to allow water
type: PURPOSE
value: to allow air
type: PURPOSE
Source sentences:
text: Thin cooling plates can be manufactured and inserted into the fuel cell, or additional channels can be machined in the bipolar plates to allow air, water, or coolant to flow through the channels to remove heat from the stack.