然而，圆桶形阳极加工周期长，适应性差。
However, cylindrical anodes have weaknesses such as long processing cycle and poor suitability.
双半内圈四点接触球轴承结构复杂、设计周期长、加工难度大。
Single row angular contact ball bearing with two piece inner ring has complex construction, long design cycle, great difficulty in processing.
在模具纹路加工中，传统的化学蚀刻方法存在污染大、加工周期长的缺点。
In the processing of the mold texture, the traditional chemical etching exits the shortcomings of the pollution and the long processing cycle.
电解加工机床通常是根据用户具体需求单机生产，机床研制周期长、设计重复、成本高。
Due to low quantity demanded, the machine of Electrochemical Machining(ECM) is usually developed in single production, leading to long production cycle, repetitive design and high cost.
支承辊轴承座是轧钢机上的关键零件之一，也是重要零件和加工周期长、难度大、精度要求很高的零件。
The backup roll chock is one of the key and important parts of the rolling mill. It has a long machining duration and the accuracy of the machining is very high.
高精度、薄壁腔体类零件在电子行业的应用越来越广泛，其加工制造一直存在加工周期长、加工成本高等难点。
High precision and thin-wall parts are used more and more widely in electronic industry, there are some difficulties to machining these parts such as long processing cycle and high processing cost.
支承辊轴承座是轧钢机上的关键零件之一，也是重要零件和加工周期长、难度大、精度要求很高的零件。
The backup roll chock is one of the key and important parts of the rolling mill.
支承辊轴承座是轧钢机上的关键零件之一，也是重要零件和加工周期长、难度大、精度要求很高的零件。
The backup roll chock is one of the key and important parts of the rolling mill.
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