In database application systems, performance becomes one of its main problems needed to be resolved with the increase of data in it.
在数据库应用系统中，随着数据库中数据的增加，系统的响应速度就成为系统需要解决的主要的问题之一。
This paper introduces the basic principle and the technical status quo of the current inversion arc welding machines, and points out several technical problems needed to be resolved.
本文介绍了目前逆变式弧焊机的基本原理和技术现状，并指出了有待进一步解决的几个技术问题。
This article summarized the content, distribution, synthesis, metabolism, biological functions and the application of taurine in aquatic feed, and the problems needed to be resolved in the future.
本文概述了牛磺酸的含量及分布、合成与代谢、生物学作用及其在水产饲料中的应用效果，并指出了牛磺酸在水产养殖中的应用前景及研究方向。
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