你想當然！

"考慮到空氣中氮氣占78%，氧氣21%,這種改善有限。而且氣體膨脹是差不多的。"

The difference is not 78% vs 100% nitrogen or 氣體膨脹是差不多的.  It's water in the air.  What about change from liquid water to water vapor?

My personal experience also tells me that nitrogen is much harder top eacape from tires, which I didn't believe before.  I kept checking my tire pressures for years and there is no significant changes at all and I stopped checking it since I have low tire pressure warning feathure on my car.

所有跟帖： 

• 不要對號入座 -chinomango- ♂ (103 bytes) () 10/15/2013 postreply 16:43:57