Up. to the present, there are not complete theoretical formulas for calculating yield pressure and burst pressure for high pressure vessels with a thin inner core and wound flat steel ribbons.
扁平绕带高压容器的屈服压力和爆破压力，至今尚无较完整的理论计算公式。
The cable core is filled with the filling compound to protect it from water ingress, over which a thin PE inner sheath is applied.
松套管（和填充绳）围绕中心加强芯绞合成紧凑和圆形的缆芯，缆芯内的缝隙充以阻水填充物。
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