英语翻译感谢贵司的回复,但我处仍有几个疑点：1.故障软管产生鼓泡的位置基本均为远离接头扣压端面的中间部分,并且在保压试验

Thank you for your reply,but I still have some doubts:1 fault hose bubbling position basic is the part away from the joint press end,and in the pressure test is not observed that any oil leakage phenomenon,reason can be excluded from the ends of the hose connection position press lead.2 using the medium of 15# aviation hydraulic oil,not the air.It should not cause air permeability.In order to further analyze the failure last time feedback hose,hose on the removal of our customers return the bubble surface again after pressure test,found a new phenomenon:in the pressure up to 25MPa,the pressure is about 10min,the surface appears the phenomenon of oil wet,with paper towels or cotton oil can adsorb down; in short time pressure unloading,surface grease and anti smoking back; in the 25MPa pressure is about 2h,the surface of oil leakage agglomeration and a drop of oil,a pressure unloading,oil is anti smoking.In addition,please the expensive department provides a layer of material,the layer of material and which media exposure may cause failure surface bubble?