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发表于 2025-4-1 02:59:12
Rechnungslegung, Zahlung, Sicherstellungenon and carbon in stoichiometric proportions. This mixture was placed in a porcelain, corundum, or graphite boat in a resistance furnace. The reactor was a porcelain or corundum tube of internal diameter 20–30 mm carrying a flow of hydrogen or argon.