显然，较低的运费成本在这种区域性的产品制造链矩阵中是很重要的一环。
Clearly, affordable transport costs are an essential ingredient in this regional production matrix.
研究结果表明，相对快速和成本较低的筛选-评估体系适用于较大范围区域性二恶英污染的快速诊断。
The value of the screening-assessment strategy in regional dioxin survey was confirmed due to being timesaving and inexpensive.
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