presen
美 英
例句
In the presen paper, a new formula for the preparation of polyvinyl acetal adhesive has been introduced.
报道了一种制备聚乙烯醇缩醛胶的新配方。
The prospect of development and application is presen. . .
最后,文章对粉煤灰的开发应用前景作了展望。