起橋要用咩野metal?

2008-01-23 6:21 am
聽阿sir講係iron 同 steel都有

我想知一知
要有咩野property

QQ

回答 (2)

2008-01-23 6:42 am
✔ 最佳答案
STEEL有IRON嫁

o...
咁STEEL係合金
抗腐蝕能力強LAW
係corrosive resistance~~
2008-01-24 8:44 am
steel, iron, tungsten

if you want to 起橋, you need some Metrical that is strong, and also the physic is very important.


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