proparea meaning in English

前区

In the past , many experts on cotton spinning wished to combine the nitto model drafting technics of little proparea gauge , small flotation area and strong controlling with the drafting model pressurized by cradle , feasible results still having not been achieved
过去曾有许多棉纺专家希望把日东式牵伸的前区小隔距、小浮游区、强控制的牵伸工艺与摇架加压的牵伸形式相结合，但一直没有可行的成果面世。
At present , the model of drafting assembly manufactured domestically and abroad , which is the key part of spinning frame , mainly includes skf model , ina - v model and hp model , etc . while numerous spinning frames manufactured by our country adopt skf model drafting mode which employs spring cradle pressurization and proparea long and short apron drafting , owning advantages of stable running and others
目前国内外制造的细纱机关键部分牵伸装置的形式主要有skf型、 ina - v型、 hp型等几种。而我国制造的细纱机多数采用skf型牵伸形式，这种牵伸形式采用弹簧摇架加压、前区长短皮圈牵伸，有其运转稳定等特点。