What's new is the composite front bulkhead and rear chassis plate.
有什么新内容，是综合前面的舱壁和后方的机箱钢板。
Stress of composite material plate with circular hole was analyzed by the model above.
按照所建立的计算模型对含有圆形孔的复合材料板进行应力分析。
The composite steel plate production quality in line with national standards.
生产的彩钢复合板质量符合国家标准。
The composite steel plate production quality in line with national standards.
生产的彩钢复合板质量符合国家标准。
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