英语语法分析

Dynamic defense of network security is a researchful hotpot in the field of network security.

网络安全的动态防御是当今网络安全领域研究的热点。

So it is also a new researchful tendency to substitute woven fiber grid for steel in concrete.

因此在混凝土中采用编织纤维格栅取代钢筋作为承力构件也是一个新的研究方向。

What method of appraising digital TV picture quality to be adopted is the researchful hotspot of TV technique now.

采用什么样的评价方法，才能很好的评价数字电视图像质量是目前电视技术研究的热点。