adj. alkaline ; strong caustic
在咖啡杯的清洗过程中，严禁使用硬质的刷子刷洗，也要避免使用强酸、强碱的清洁剂，以避免咖啡杯的表面刮伤受损。
In the process of cleaning coffee, do not use hard brush scrub, but also to avoid the use of strong acid, alkali cleaning agent, so as to avoid scratching the surface of damaged coffee cup.
这种水呈强碱性的。
化学磨版：用强酸或强碱溶液在平版印版的版面上腐蚀，造成幼细微粒表面。
Chemical graining: the lithographic plate surface is etched to produce a fine grain by the application of a strong acid or alkali solution.
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