annealing oven
41Nitrogen generator — Nitrogen generators and stations are stationary or mobile air to nitrogen production complexes. In advanced economies, membrane nitrogen plants have almost ousted alternative processes of nitrogen generation in all cases where nitrogen is not… …
42lehr — /lɪə/ (say lear) noun a long tunnel shaped oven for annealing glass. Also, leer, lier, lear. {German: pattern} …
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