针对宁夏银星煤矿所用ZY7600/20/43D型液压支架护帮装置结构件经常出现损坏的情况,从护帮结构、焊缝型式及焊接效果入手,建立了护......

Backfill hydraulic support is the key equipment in achieving coal mining and solid backfilling simultaneously in solid b......

As one of transmission mechanisms,continuously variable transmission(CVT)can transfer energy depending upon rotation spe......

滚子从动件凸轮机构在选取半径时,为保证运动不失真,其取值不大于轮廓曲线上最小曲率半径,文中介绍一种利用图解法求解曲率半径及......