作者们指出了一个经济学中行之有效的理论,向完全竞争的接近不总是好的。
The authors point to a well-established principle in economics, that incremental moves towards perfect competition are not always good.
最先进的统计学、化学、物理学方法未必对每天大量排放的碳的计量行之有效。
Most advanced statistics, chemical or physical methods may be incapable of measuring the enormous carbon emission.
目的探讨《组织胚胎学》教学行之有效的教学模式。
Objective To explore an effective mode in histology and embryology teaching.
应用推荐