运用运动合成原理分析了割前脱粒收割机梳齿运动的速度特征。
The speed characteristics of comb of threshing apparatus prior to cutting were analysed based on movement composition theory.
本文对割前摘脱台后挡板不同位置及结构对损失的影响进行了试验研究。
In this paper, the header losses in the stripping header at different place and structure of the rear shield have been studied experimentally.
气吸式4ZTL-1800割前摘脱稻（麦）联合收获机的吸运风机的能耗和噪声一般都较大。
The reduction of the noise and airflow pressure dropped in the fan of 4ZTL-1800 rice combine harvester threshing prior to cutting should be paid attention.
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