国精产品一区一区三区糖心,内射毛片内射国产夫妻,护士高潮17p,亚洲人成77777在线播放网站不卡

The mold mainly tests the following four aspects:

1. Measurement of angle and taper;

2. Roundness, cylindricity and coaxiality measurement;

3. Detection of parallelism and verticality;

4. Inspection of mold surface and cavity;

The above whole detection process can be completed by using angle gauge block, cone gauge, angle ruler and image measuring instrument.