针对煤矿生产系统中运输、筛分、破碎等环节中导料装置易磨损及噪声的问题,结合设计经验,对已有设计进行了改造,设计了新型减震易......

Lanthanum-doped muscovite (MC) composite particles (hereinafter abbreviated as La-MC) were prepared by the mechanical so......

摘要：随着移动时代的到来，只适配了电脑网页、性能羸弱的校园教务系统，已经不能满足学生们的移动查询需求。为此，设计了一种基于网络爬......