spraying polyurea的用法和樣例：
例句
- Development history and popularization situation of technology of spraying polyurea elastomer are focused.
重點介紹了噴塗聚脲彈性體技術的發展進程和推廣普及情況。 - This paper introduces construction technology of spray polyurea elastomer used in Beijing Shooting Range CTF.
介紹了奧運射擊中心飛碟靶場看台屋面防水耐磨工程採用噴塗聚脲彈性體的施工工藝。
