尽管每一种自动化解决方案都需要涉及这三个步骤，但是由谁执行这些步骤、何时执行步骤以及同一个步骤执行多少次，这些问题都因具体的解决方案而异。
Though each of these steps is required, who performs the step, when the step is performed, and how many times the same step is performed varies with each automation solution.
一个好用的表单，需要解决这三个方面的问题。
For a form to be usable, all three aspects need to be tackled.
中文命名实体抽取的研究，存在分词、领域和方法三个方面的问题需要解决。
After summarizing and analyzing the state of the art on Chinese name entity extraction, we emphasize that three fundamental problems including word segmentation, domain, and method should be solved.
氢能的利用需要解决三个问题：氢能的制取、储运以及应用。
Three issues need to be paid attention on the use of hydrogen, which are hydrogen energy extraction, storage and transportation and application.
本课题主要研究了应用模板技术所需要解决的三个方面的问题，分别是模板引擎、模板管理和标签管理。
Template engine, template management and label management, which are the three problems in template technology, are worked over in this paper.
本课题主要研究了应用模板技术所需要解决的三个方面的问题，分别是模板引擎、模板管理和标签管理。
Template engine, template management and label management, which are the three problems in template technology, are worked over in this paper.
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