scraper hoist是什么意思

用法例句

Trackless Mining Technology With A Combined Scraper-Truck Ore Removal System;

电耙与汽车联合出矿的无轨开采工艺

According to geology conditions of Ⅳ-1 ore body in Suichang gold mine, scraper shrinkage method is applied in the test which the method use flat-bottom trench structure and scraper to draw ore.

针对遂昌金矿Ⅳ -1矿体的地质开采条件 ,试验了平底堑沟受矿电耙运搬底部结构的电耙留矿采矿法 ,取得了较好的经济效益。

Research and application of scraper trench segmented openstope method in Tongshan Cooper Mine;

电耙堑沟分段空场采矿法在铜山铜矿的研究与应用

In order to increase,the retrieval amount of clean coal the electric rake are designed and erected,and its main parameters is calculated.

选煤厂为提高精煤回收量 ,设计安装了电耙子 ,并计算了电耙子的主要参数 ,安装后 ,运行效果良好。