Cement. A substance (often a ceramic) that by chemical reaction binds particulate aggregates into a cohesive structure. With hydraulic cements the chemical reaction is one of hydration, involving water.

• 水泥:一种物质(通常为陶瓷),通过化学反应使颗粒料成为粘合结构。用水泥,化学反应是一种水合作用。