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| pneumatic channel | |||
| piping and conduit | |||
| conduit; duct; line; main; pipe; tubing | |||
| pipeline; pipeline A line of pipe connected to valves and other control devices, for conducting fluids, gases, or finely divided solids | |||
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| piping | |||
| pipelines | |||
| rørledning: 51 phrases in 16 subjects |