求翻译：组合机床是根据工件加工需要，以大量通用部件为基础，配以少量专用部件组成的一种高效专用机床。目前，组合机床主要用于平面加工和孔加工两类工序。由于组合机床能够进行多轴，多工位加工，提高自动化程度，缩短加工时间和辅助时间，生产效率高，加工精度稳定，研制周期短，便于设计、制造和使用维护，成本低, 而且机床易于改造，产品和工艺变化时，通用部件还能重复利用，经济性较好。所以组合机床在大批量生产中广泛应用。是什么意思？

The combination of machine the workpiece needs to a large number of common components, together with a small amount of dedicated components of an efficient special purpose machine. At present, the combination of machine tools for plane machining and hole processing two types of processes. Combinatio

Combination machines is based on the processing required, to a large general purpose component-based, with a limited number of private parts of a efficient private machine. At present, the combination machine mainly used for graphic processing, and holes two class operation. Due to a combination for

Combination machine tool is based on the workpiece machining needs, is based on a large number of common parts, accompanied by a small number of private parts%