A study on the structural design principle of meteorological observation system has been made.
对气象观测系统的结构设计原理进行了研究。
As a new technique, much work is needed to theoretically study its principle and application.
电磁声发射技术是一个新技术，对其产生机理以及应用的理论分析是非常有必要的。
To the theory study, we have a principle of Necessity and Enough for Practical Use.
对于理论学习，我们以够用为原则。
Only put forth effort to study research, you can get a lot of and accurate and viable standard, principle with plan.
只要下功夫去学习研究，你就会得到很多准确可行的准则、原则和计划。
Only put forth effort to study research, you can get a lot of and accurate and viable standard, principle with plan.
只要下功夫去学习研究，你就会得到很多准确可行的准则、原则和计划。
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