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。
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。
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