In the rational examination on the deterrent effect of death penalty, the focus is whether or not death penalty has marginal deterrent effect in comparison with life imprisonment.
在对死刑的威慑效果进行理性考察的过程中，死刑是否具有大于终身监禁的边际遏制效果是考察的中心所在。
For analytical purposes, it is more important to focus on the marginal revenue and marginal cost curves.
从分析的目的上来说，关注边际收益和边际成本曲线会更重要些。
Being intangible product with zero marginal cost, software's quality management is more difficult than physical product, and should place more focus on the process quality and process quality control.
软件是一零边际成本的无形产品，其质量管理要较实物产品的质量管理更难以进行，需要对过程质量及过程质量控制更加关注。
Being intangible product with zero marginal cost, software's quality management is more difficult than physical product, and should place more focus on the process quality and process quality control.
软件是一零边际成本的无形产品，其质量管理要较实物产品的质量管理更难以进行，需要对过程质量及过程质量控制更加关注。
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