用适当的溶剂除油或润滑脂。
通常，这个反应在进行适当的溶剂中发生，如低级醇。
In general, this reaction will be conducted in the presence of a suitable solvent such as a lower alkanol.
确保玻璃板清洁干燥：用适当的溶剂清洗和清洁干净的棉纸或软布擦拭。
Ensure that the glass panel is clean and dry: wash with a suitable solvent and wipe dry with clean tissue or lint-free cloth.
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