As compared with the practically-measured results, the analysis and the calculation theory established in this paper about cutting noise of the small-sized disk saw machine is correct.

理论计算值与实测结果的比较表明，所建立的圆盘锯机锯切噪声分析及计算理论是正确的。

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Based on analogous Theory, the large sized disk saw machine model is manufactured. The sound and vibration properties of model saw blades are studied systematically and deeply via experiments.

根据相似理论设计制造了大型圆盘锯机模型，通过实验对模型锯片的声振特性进行了系统深入的研究。

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When the planet Mars was first observed through a telescope, people saw that the round disk of the planet was criss-crossed on earth that are viewed from an airplane.

当第一次用望远镜观测到火星时，人们从飞机上看到，火星的圆形圆盘在地球上纵横交错。

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Turns out, a good chunk of it resulted from the price spike in the quarter for hard disk drives, which saw a sharp fall-off in supply as as a result of the recent severe flooding in Thailand.

FORBES: Update: Avnet Profits Boosted By Higher HDD Prices

This last week saw some interesting announcements representing the implementation of technologies that will enhance hard disk drive and flash memory technology in 2013 and beyond.

FORBES: Rare Gases and Fine Lines