Also it is the valuation criterion of material price dynamic variation and basis of the materialvaluation for bidding bottom of construction bid and tender quotation.
同时，它也是材料价格动态变化的计价依据，施工招标标底、投标报价的材料费计价的基础。
2
Methods The forest ecosystem service is evaluated by the method of materialvaluation, the ARCVIEW geographic information system technique, and the observation on the spot in the different regions.
But in the economic evaluation to the gas reserves, we are always difficult to carry on the accurate valuation because of lacking the related material.