Indirect materials including Aluminum Alloy keel or PVC keel, buckle strips, fasteners, adhesives, the relative direct cost of raw materials is slightly lower.

间接原材料包括铝合金龙骨或PVC龙骨、扣边条、固定件、粘结剂等，相对直接原材料费用稍低。

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The anode catalyst of direct methanol fuel cell (DMFC) is one of the key materials for DMFC. The electrochemical activity of the catalysts affects the performance and cost of the fuel cell.

直接甲醇燃料电池(DMFC)阳极催化剂是DMFC的关键材料之一，其电化学活性的大小对燃料电池的性能及成本起着关键作用。

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At the same time, direct materials, direct labor, manufacturing costs and cost analysis during the analysis of the costs. Corporate financial analysis can provide a reference work.

同时进行直接材料、直接人工、制造费用等成本和期间费用分析，可为企业财务分析工作提供一定参考。

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