以下为句子列表：
英文: Abstract: This paper outlined basically the history of developing the rice planting machine.The present situation of the rice planting machine was described.And the existing problems were analyzed.Based on the above analyses,the developing priniciples &am
中文: 文摘:该文概述了我国水稻种植机械重要发展历程，描述了我国水稻种植机械现状，分析存在的问题，从我国的国情出发提出了我国水稻种植机械的开发原则和技术对策。
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英文: General rotatory composed design with 5 factors was adopted for studying influence of factors on seedling bury percentage of naked root transplanting, and mathematical models between parameters of transplanting machine and seedling bury percentage were se
中文: 为研究挠性圆盘式移栽机移栽机构各参数对秧苗埋苗率的影响，进行五因素二次通用旋转组合设计试验，建立了移栽机参数与秧苗埋苗率间的数学模型，并分析了各参数对秧苗埋苗率的影响效应。
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