求翻译：滚槽时，适当增加滚轮圆角，增大槽的角度，尽可能减少应力集中的可能性，供应商在7月30日提交整改样件是什么意思？

Rolling groove, the appropriate increase in the wheel round, increasing the slot angle to minimize the possibility of stress concentration, supplier corrective July 30 to submit sample

rollers rolling slot, an appropriate increase Yuen Kok trough, and increase the angle reduce stress concentration, as far as possible, the supplier in the possibility to submit 30 July as the rectification.

When rolls the trough, increases the hoop fillet suitably, increases the trough the angle, reduces the stress concentration as far as possible the possibility, the supplier submits entire in July 30 changes pattern

Roll slot, appropriately increase wheel round, increasing angle of the grooves, minimizing the possibility of stress concentration, suppliers submit rectification and reform on July 30 samples