ポルトランドセメント
1. Portland cement
2. Portland cementPortland cement (often referred to as OPC, from Ordinary Portland Cement) is the most common type of cement in general use around the world because it is a basic ingredient of concrete, mortar, stucco and most non-specialty grout. It usually originates from limestone.
Read “Portland cement” on English Wikipedia
Read “ポルトランドセメント” on Japanese Wikipedia
Read “Portland cement” on DBpedia
Read “Portland cement” on English Wikipedia
Read “ポルトランドセメント” on Japanese Wikipedia
Read “Portland cement” on DBpedia
ポルトランド・セメント
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