其他结构特性（如，侧体强度，由整车重量计算得到的车顶强度）
Other structural characteristics (e.g., side strength, roof strength as a function of vehicle weight).
中顶板拉伸新工艺可有效提高车顶钢结构制造质量。
The new tensile technology of the middle roof plate can improve the manufacture quality of the roof steel structure efficiently.
出于这些原因，欧洲、北美和亚洲的许多OEM厂商采用了铝制的发动机盖、挡泥板、后备箱盖、车门、车顶和车身结构。
Due to above reasons, many OEMs in Europe, North America and Asia have adopted aluminum hood, fender, deck lid, door, roof and structure.
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