Construction of the formwork and preparation of the metal reinforcement for shells required particular care and accuracy because of their limited thickness . 由于壳体的厚度有限,壳体的金属能加工制备与模板建造需要特别细心与精确。
2.
Characteristics of non - metal reinforcement used for optical cable part1 : glass fiber reinforced plastic rods 光缆用非金属加强件的确特性第1部分:玻璃纤维增强塑料杆