The confident estimation to the headframe and bed plate of drilling rig is done by this method,the computational solution is identic...

弥补了石油行业故障数据可靠性评定方面不。

Bed plate: Metallic plate in which bronze or steel knives are fitted, set dirrctly underneath the beater roll of the hollander .

荷兰式打浆机内打浆轮下面底床，它上面装上青铜或钢刀片。