1.Cross-section ovalization is one of the flaws in the thin-walled tube NC bending process.

1.截面畸变是薄壁管小弯曲半径弯曲容易出现缺陷之一。

2.Using an example,the dominancy of the present optimization method is testified in improving the efficiency of NC machining and cutting manufacture cost.

2.通过实例验证此优化方法在孔群加工中明显提高了加工效率、降低了加工本。

3.However,the passive film on Fe-20Cr NC was a n-type semiconductor which had a higher transpassivation potential and therefore higher resistance to pitting corrosion.

3.而纳米晶涂层在两种溶体系中钝化膜均为n型半导体。

4.Through analyzing and accounting evocable error of tool's transmutation during milling process,the compensatory method to the error in NC machining has been put forward.

4.通过分析计算铣削过程中刀具变引起误差,提出对这种误差补偿方法。

5.However, NC devices have high prices and there’re some volatile factors when NC system is under the practical operation, which incumber the testing and operation process.

5.但备本较高，同时系统在实际运转过程中存在一些不稳定因素，给运行调试工作带来不便。

6.C7620-11 semi-automatic chuck multicut lathe was reformed into a kind of simple constructed NC machine,so that the variety of process was increased ,and automation degree was also improved.

6.通过对C7620-11夹盘多刀半自动车床改进,扩大了加工种类,提高了自动化程度,使其为一台简易型车床。

7.Abstract: C7620-11 semi-automatic chuck multicut lathe was reformed into a kind of simple constructed NC machine, so that the variety of process was increased ,and automation degree was also improved.

7.摘 要: 通过对C7620-11夹盘多刀半自动车床改进，扩大了加工种类，提高了自动化程度，使其为一台简易型车床。

8.To increase the precision of the electric igniting parameters of common fusehead, a kind of wrapper such as NC or CMC,can be used to wrap the bridge wire in common fuse head .

8.为了提高普通点火头发火参精度,可以在桥丝上涂覆一层硝化棉或羧甲基纤维素涂层。