由于任何一种信息披露政策都存在准备成本（preparation cost）和私人成本（proprietary cost），价值最大化的管理当局会根据成本效益原则选择会计政策，将信息不对称降低至“边 际披露收益＝边...
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order preparation cost 订货准备成本
Cost budget preparation 成本预算的制定
Preparation of cost estimates 编制费用概算
Low-cost preparation 廉价制备
cost of preparation 合成成本
The exchange film of the invention has low preparation cost, short preparation time and good product performance.
本发明 制备成本低、制备时间短，产品性能好。
The preparation cost is inexpensive, production cost per kilogram is 238.5 yuan, it has the stronger application value.
制备成本低廉，每公斤成本238.5元，具有较强的应用价值。
The said method can reduce the preparation cost of molecular sieve effectively and reduce the amount of drained sewage.
该方法可有效降低分子筛制备成本、减少污水排放。
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