求翻译：一次，一位开矿山的朋友找到王华良说：“井下的矿石出渣全靠人工，费时、费力、效率低，且危险，很多人不愿干。能否制造一种替代人工，专门在井下扒渣的机械……”王华良兄弟在悬挖机的基础上不断改进创新，成功研制了一种新型“扒渣机”。是什么意思？

Time, the friend of an open mine to find Wanghua Liang said: "thanks to the underground ore slag artificial, time-consuming, laborious, low efficiency, and dangerous, a lot of people do not want to dry the ability to create an alternative to artificial, specializing in underground Pa slag mechanical

正在翻译，请等待...

On one occasion, a open friend of mine found Wang Hualiang said: "the underground ore slag by manual, time-consuming and laborious, low efficiency, and risk, many people are reluctant to do. Can create a substitute manual, specialized in mine slag-raking machine...... "Wang Hualiang brothers suspend