以CA6140型普通车床的数控改造为例，介绍了自动回转刀架的结构、安装和换刀控制；并且对自动回转刀架常见故障与排除提出了意见和措施。
Takes nc transformation of CA6140 type common lathe as an example, has explained the structure, installation and principle on automatic tool changing of auto-rotating tool-carrier.
本文对电梯常见故障的诊断与排除方法进行探讨与分析。
In this paper, elevator fault diagnosis and to exclude common methods to explore and analysis.
介绍了MZE - 630埋弧自动焊机的基本原理与结构，焊机操作与维护，焊机常见故障、产生原因和排除方法。
And it also introduces the basic principle and structure, operation and maintenance, common problems, troubleshooting and solutions of MZE-630 automatic submerged arc welding machine.
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