本文在对喷雾降尘机理深入分析的基础上，指出了常规喷雾降尘系统的主要弊端。
Based on deep analysis of spray dust-settling mechanism, the paper has put forward main malpractices of conventional dust control methods.
迷航问题是超文本信息模型中的主要弊端，解决该问题需要使用超文本数据信息的导航方法。
The disorientation problem is a main disadvantage in hypertext information model. For solving the problem, we require to use the navigational method in hypertext data.
延迟初始化的主要弊端是，由于要查看属性是否已定义，如果没有，则得到它的值，这会使代码变得更复杂。
The main disadvantage of lazy initialization is your code becomes more complex because you need to check to see if the attribute has been defined yet and, if not, obtain its value.
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