The PPM market is constantly changing with new vendors, big it shops acquiring smaller players, and PPM tools that are being enhanced all the time.
PPM市场不断有新的厂商出现，大的IT公司收购更小的公司，并且PPM工具一直在增强。
The rest of the time would be spent on waiting, moving, setting up, loading, unloading, inspecting the part, setting speeds and feeds, and changing cutting tools.
其余的时间则完全用在等待， 运送，配置，装卸，检验，调速与改变电切工具上。
When machining a complex workpiece on a general-purpose lathe, a great deal of time is spent changing and adjusting the several tools that are needed to complete the work.
在通用车床上加工一个复杂的工件时，在更换和调整加工时所用的一些刀具上要花费很多时间。
When machining a complex workpiece on a general-purpose lathe, a great deal of time is spent changing and adjusting the several tools that are needed to complete the work.
在通用车床上加工一个复杂的工件时，在更换和调整加工时所用的一些刀具上要花费很多时间。
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