These techniques general work fast, cost inexpensive, and do not need large-volume unit, so they have a good large potential in extensive pesticide residue monitoring and spot assays.

上述技术的共同特点是，一般不需大型设备、检测快速、成本低，因此，在大规模农药残留监测和实时现场检测方面具有广泛的应用前景。

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The unit-volume forecasts proved overoptimistic for several consecutive periods, and large amounts of inventory piled up.

一段时间过后，事实证明这一预测过于乐观，导致库存积压。

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Economies of scale refer to the reductions in unit cost achieved by producing a large volume of a product.

规模经济指通过大量生产某产品一取得单位成本下降。

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