Clinkers

• These coarse particles, or clinkers, absorb water very slowly, are practically inert, and have very feeble cementing properties. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• They must have appeared first as crusts and clinkers. 赫伯特·乔治·威尔斯. 世界史纲.

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