好几个人问过我一开始应该先学哪个计算机编程语言，这个问题没有唯一的答案，不过选择的时候可以从以下的几个方面考虑。
Several people have asked what programming language they should learn first. There is no one answer, but consider these points.
这里着重从网络课件的特征，课件设计应考虑的因素等方面，提出设计课件时应注意的几个问题和解决问题的思路。
This article propose several questions paid attention being designed and how to solve them from the network courseware's character and factor considered.
从系统信噪比、温度灵敏度和工作稳定性等几个方面综合考虑系统工作的中心波长。
The central wavelength is discussed based on the combination of signal-to-noise ratio, temperature sensitivity of system and operating stability.
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