portland cement

汉语翻译

英语解释：

名词 portland cement:

1. a cement that hardens under water; made by heating limestone and clay in a kiln and pulverizing the result
   同义词：hydraulic cement

例句：

1. Able to set and harden under water, as Portland cement.
   在水中变硬的能在水下定型并变硬的，如波特兰水泥