求翻译：滚齿机、插齿机、铣齿机等圆柱齿轮制齿机床在生产效率、制造精度、复合化、大型化等方面与国外先进水平有较大差距是什么意思？

Hobbing, gear shaping machines, milling machines and other tooth spur gear system efficiency in the production of machine tools, manufacturing precision, complex and large-scale, etc. and there is a wide gap between the international advanced level

Gear Hobbing Machine, machine, milling machine, such as reconnaissance plane cylindrical gears system in production efficiency, manufacturing precision machine tools, and compound and large-scale foreign advanced level in matters such as a relatively large gap

Cylindrical gears ratchet engine beds and so on gear-hobbing machine, gear shaper, gear cutter in aspects and the overseas advanced level and so on production efficiency, manufacture precision, recombine, large scale have the big disparity

Gear hobbing machines, gear shaping machines, milling machines, gear machine in production efficiency, manufacturing precision, complex, large, and so on with foreign advanced level a big gap between

Gear-hobbing machine, insert tooth machine, mill tooth machine cylinder gear make tooth lathe in production efficiency, make take, maximization,etc. respect and foreign advanced stage of precision and complex have great disparity