widespread device

With the rapid advancement of information technology and widespread use of various electronic products, such as smart phone, PDA, hand-held game device and music players, computer graphics is now more and more important.

随着信息技术的进步，计算机等电子产品的普及应用，特别是智能手机、PDA、掌上游戏机、随身音乐播放器等广泛使用，计算机图形学的地位越来越重要。

In recent years, with the performance of Power Electronics devices continued to consummate and the AC Motor Speed Control Technology and the Frequency Speed Converter Technology development and their increasingly widespread application of the device.

近年来，随着电力电子器件的性能的不断完善，交流电机调速技术与变频调速技术的取得重大突破，而且它们在设备上的应用日益广泛。

Further studies are needed to better circumstantiate these conditions and to provide safe rules for the use of this increasingly more widespread device.

有必要进行深入的研究以更好地验证研究结果，以便为手机这一日益广泛使用的通讯设备提供安全使用方面的指导。