将正态分布变换(NDT)应用于基于扫描匹配的SLAM中，实现了家庭服务机器人较大规模室内环境下的建图。

Normal Distributions Transform (NDT) is used in scan-matching based SLAM, and map-building is implemented in larger scale indoor environment by home service robots.

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利用2 0 0 0年人口普查抽样数据，本文对我国留守儿童的规模、结构、分布、家庭类型和受教育状况等基本情况进行了研究。

Using data from the 2000 population census, this paper describes the basic characteristics of the children left behind: their size, structure, distribution, family, and educational status.

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分布式发电系统往往被放置在家庭和企业的屋顶，而公用事业规模的项目往往是建在地面上。

Distributed generation tends to be placed on the roofs of homes and businesses, while utility-scale projects are often built on the ground.

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