main driving and lift mechanism 主传动和升降机构
The optimal design of a six-bar linkage to be used in the main driving mechanism of a gear planer is discussed and treated as a multi-objective problem.
本文首先讨论了在插齿机主传动机构中使用的六杆机构的优化设计问题，并建立了一个多目标数学模型。
The purpose of the paper is to analyze characteristics of urban land expansion and regional discrepancy, and to examine the main driving mechanism of urban land use change.
利用长沙市区近十年土地利用变更数据，分析长沙市区建设用地扩张存在的问题、根源及其解决途径。
According to the formulas deduced, it is concluded that the main mechanism of the laser driving is thermal effect under present conditions.
根据推导出的公式估算，得出了在现有条件下激光驱动的基本机理是光的热效应的结论。
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