drag roller的意思|示意
美 / dræɡ ˈrəulə /
英 / dræɡ ˈrolɚ /
张力辊
drag roller相关例句
Through drilling experiment in 156 adjustment Wells, the drilling behaviors, cutter wear, downhole jet flow field and drilling effect of drag bits and roller ones were comparatively analyzed.
通过156口调整井钻井试验，对比分析了刮刀钻头和牙轮钻头的钻进特性、牙齿磨损特性、井底流场特性及钻井效果。