Russisch ⇄ Chinesisch Englisch Spanisch

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Astro.	purge the line
Bauw.	blow through the pipeline; blow pipeline through
Makarow.	blow purge a pipe-line; blow through a pipe-line
Tech.	blow through pipeline; purge pipeline
Verk.	blow through pipe-line
Öl- u. Gastechnik	blow through a pipeline; purge a pipeline