https://en.wikipedia.org/wiki/Polytetrafluoroethylene
我很懶的挑出字眼上色
PTFE is a fluorocarbon solid, as it is a high molecular weight compound consisting wholly of carbon and fluorine. PTFE is hydrophobic: neither water nor water-containing substances wet PTFE, as fluorocarbons demonstrate mitigated London dispersion forces due to the high electronegativity of fluorine. PTFE has one of the lowest coefficients of friction of any solid.

London dispersion forces and Van der Waals force 什麼關係你在研究一下...

支撐懸空?? 你搞錯什麼??
我覺得你要先去再搞清楚什麼叫做熱傳導以及隔離層的意思
用個汙點的舉例 帶著套子就不叫強姦 只有沒套子隔離的才能叫強姦?

阿 還有一點 你有沒有看過濃硫酸脫水?
你該不會以為你放的菜阿 肉阿 都沒水?