The second polyimide polymer is prepared with aromatic tetracid dihydride and aromatic diisocyanate.
第二种聚酰亚胺聚合物是芳香族四酸二氢化物与芳香族二异氰酸酯反应生成的。
Polyimide is a macromolecule polymer material.
聚酰亚胺是一种高分子聚合物材料。
Coils are made of single polyimide wire wrapped with glass fibre. The insulation level is Class h.
线圈均由单玻璃丝聚酰胺漆包线制成，绝缘等级为H级。
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