RDD;required delivered density

The main components for the American National ITS Architecture are user services,logical architecture,physical architecture,standards requirements,and implementation strategy.

美国智能交通系统国家架构体系主要包括用户服务、逻辑架构、实体架构、所需标准、以及实施策略等内容。

By analyzing the courtroom interactions, we aim to demonstrate how topics are controlled by questioners, and, more importantly, how desired information is solicited through topic control.

本文从语篇分析的角度，对中国和美国法庭审判中，法官，公诉人或律师在问话中如何控制被告或证人的话题进行研究，旨在揭示话题控制在问话人获取所需信息过程中所起的作用。

By using experiment method,the required power and the heat transfer coefficient of helical ribbon impeller in heat transfer from the shell to inner layer of mixed fluid was discussed in this article.

用实验方法讨论了螺带叶轮对从罐壁到混合液体内层传热时,所需功率和传热系数的影响因素,得出了螺带式搅拌桨直径与搅拌罐直径之比d/D=0。

The accurate selection of submersible mixer is performed on the basis of the required thrust and the nominal thrust of the mixer.

定量分析了水池中的系统损失,依据所需推力和潜水搅拌器额定推力这两大主要因素对潜水搅拌器进行精确选型,并利用F/P1值和生命周期成本比较了不同搅拌器的工作效率,选择了最优方案。