retardation area

Exploration on Design of Retarder Layout in Coupling Area under Condition of Retardation to Target with Variable Velocity

变速打靶条件下连挂区布顶设计的探讨

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Objective To explore the risk factors of children mental retardation in the rural area.

目的探讨农村地区儿童精神发育迟滞（Mental retardation，MR）的危险因素。

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By employing a relatively detailed thermal load time retardation chart with the unit heat supply area net value of the nuclear heat supply system assigned as an optimization objective, an optimization of the nuclear heat supply plant thermochemical factor was conducted.

利用较详细的热负荷延时图，以核供热系统单位供热厂热面积净现值为优化目标，对核热电化系数进行优化。

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intervening measures of reducing morbidity rate of neonatal asphyxia in high mental retardation area

降低弱智高发区新生儿窒息发生率措施分析

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Among numerous causes leading to retardation of economic society development in the west area, the most basic one is that manpower resources in the west area which adapt to modern economy and social development are quite weak.

在众多导致西部经济社会发展滞后的原因中，最根本的原因是：西部地区适应现代经济和社会发展的人力资源基础薄弱。

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