presense

美 　英

• 網(wǎng)絡(luò)預警系統(tǒng)；安全系統(tǒng)

例句

An epoxy modified acrylic emulsion was prepared at the presense of salt formed by epoxy resin and acrylic resin.

采用環(huán)氧樹脂與丙烯酸樹脂成鹽的方法，制得水性環(huán)氧丙烯酸樹脂。

I'll sign in the presense of all the representatives.

我要當著所有代表的面簽字。