1·In addition, the scarcities and future developing perspectives in this field are also discussed.
此外,还指出了该研究领域的不足以及今后应该加强的研究方向。
2·This chapter sum up the whole paper's studies, simultaneously, pointed out the main contributions, characteristic, scarcities and improvement direction.
本章对本文所做研究进行了总结,指出本文的主要贡献、研究特色以及不足,并提出今后的改进方向。