... fixed costs when operating 经营中的不变成本; 经营中的不变成本 flat cost 直接费; 纯成本; 纯粹成本; 净成本; 净成本; 工料费 flexible labor cost 可变人工成本 ...
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这可能部分源于分离寡聚物成本高耗时长——从数百公斤干燥的植物样本中可能只能分离得到数毫克的纯品。
This is partly because isolating the oligomers is both costly and time-consuming - processing hundreds of kilograms of dried plant material often yields only a few milligrams of a single product.
而这些功能都是很好的成本是非常高的纯污秽条件。
While the features are nice, the cost is very high in terms of pure nastiness.
方法具有标样制备简单、消耗纯稀土量少、标准样片易保存、制样成本低等优点。
This method is characterized as it is low cost, economic and simple in standards preparation, and standards can be easily preserved.
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