Development Risk And Countermeasures 研制风险及其对策
development trend and countermeasures 发展趋势与对策
development problems and countermeasures 开发问题与对策
Protective countermeasures are under development, including lens shutters and filters that block certain laser frequencies.
防御性对策正在开发，包括透镜光闸及滤波器，能阻止某个频谱的激光。
Finally, against 4s service system and the status of the problem, I point out some ideas and countermeasures on the 4s service system development trend.
最后，针对4s服务体系的现状及出现的的问题，提出了关于4s服务体系未来发展趋势方面的一些设想与对策。
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