Conclusion Economic, simple, and effective, the programme "Focusing on early childhood development" is suitable for the impoverished rural areas in China.
结论“关注儿童早期发育”项目是适于在中国贫困农村开展的一项经济、简便、有效的技术。
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Starting from technique and economy, the formula for calculating technical-economic indexes of gas field developmentprogramme is provided in this paper.