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  1. 1
    The Assembling Requirements for 2K-H Planetary Gear Drive with Unequal-angle Arrangement

    The Assembling Requirements for 2K-H Planetary Gear Drive with Unequal-angle Arrangement by Zhang Yongfeng.

    Published 1995-01-01
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  2. 2
    Analysis on available production resources in the cropland system of agro-pastoral integration

    Analysis on available production resources in the cropland system of agro-pastoral integration by GUAN Fachun, BIAN Buyun, HUANG Lihua, ZHANG Yongfeng, LI Xiaohui, ZHANG Lichun

    Published 2019-04-01
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