由於Mn在熔煉過程中易揮發，所以合金配重時需比原設計重量多添加一些量。

由於Mn在熔煉過程中易揮發，所以合金配重時需比原設計重量多添加一些量。

結果 (英文) 1:

Since Mn is easy to volatile during the melting process, it is necessary to add a little more than the original design weight when the alloy is weighted.

結果 (英文) 2:

Because Mn is easy to volatilize in the melting process, it is necessary to add more amount to the alloy counterweight than the original design weight.

結果 (英文) 3:

Since Mn is volatile during smelting, the alloy counterweight needs to be added a little more than the original design weight.