六边形结构和绝缘板刚性结构的内在结构稳定性（SIP）起到了绝对的支撑作用。
The inherent structural stability of the hexagonal form and the rigid construction of Structural Insulated Panels (SIP) precludes the use of added structural support.
电绝缘用非刚性氯乙烯聚合物管的试验方法10。
Test Methods for Nonrigid Vinyl Chloride Polymer Tubing Used for Electrical Insulation 10.
绝缘材料。电工用热固性树脂基工业刚性圆形层压管和棒。第1部分：定义、名称与符号和一般要求。
Insulating materials - Industrial rigid round laminated tubes and rods based on thermosetting resins for electrical purposes - Part 1: definitions, designations and general requirements.
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