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引用:
作者傳說的神奇寶貝
所以用氦氣填充的好處是?...... 
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The reason the drives are filled with helium is to reduce turbulence inside the hard drive associated with normal air. The helium used inside the drive is 1/7 of the density of normal room air allowing for lower power consumption and lower operating temperature inside the drive.
http://www.dailytech.com/HGST+Unvei...rticle33677.htm
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