名词
中文翻译：主要成本法
同义词：
['principal cost method', 'principal cost approach']
例句：
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1. The companyuses the prime cost method to calculate its profit margins.
该公司使用主要成本法来计算其利润率。
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2. The prime cost method is a useful tool for project managers to estimate costs accurately.
主要成本法是项目经理估算成本的有用工具。
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3. In the prime cost method, the initial cost of a product is deducted from the total cost to determine the break-even point.
在主要成本法中，产品初始成本从总成本中扣除以确定盈亏平衡点。