暴雪針對《魔獸世界：巨龍崛起》專業材料影響技能加成做了解釋，我在本文下方直接引用了，有需要的可以機翻。10版魔獸在這方面比較複雜，這點暴雪自己也肯定了，所以我也會簡單説下我的理解。
魔獸10.0專業材料品質對成品的影響
當你全部使用1級（銅色）品質的專業材料製作物品時，你得到的專業技能加成是0。如果全部使用2級（銀色）品質材料，技能加成為50+，這會影響製作成品。全部使用3級品質材料，技能加成為100+，同樣影響製作成品。
重新製作方面。當對一個原來使用一級材料的物品重新製造時，第一次替換原來材料的40%你會獲得40+技能加成，再次是80+，第三次後為達到上限100+。因此如果需要對原來的一級材料成品重新製造，需要三次達到技能上限。
以下為暴雪藍貼，下方附連結：
I can clarify this. This particular aspect of skill bonuses is a bit fiddly to avoid making it advantageous to simply craft something with all Q1 reagents, and then recraft it with all Q3 and get full skill when doing so. If that worked, we would often do that, as the recraft takes somewhere around 40% of the reagents in the original craft…yes it also takes Artisan’s Mettle, but not much.
原文連結
So the way this works is the item “remembers” the quality of the reagents you crafted with. Let’s say the original item can give you 100 skill from reagents. In this world, if you craft with all Q3, you get +100 skill. If you craft with all Q2 you’d get +50 skill, and all Q1 and you’d get 0 skill.
Let’s say you craft the item with all q1 reagents. You got 0 skill.
Now if you recraft using all q3 reagents, you’ll get +40 skill. It’s effectively “replaced” 40% of the old q1 reagents with q3. Recraft again with q3 and it’ll go up to +80 skill…you’ve replaced another 40%, meaning you are at 80% q3, 20% q1. Finally do it a last time, and you’ll get 100% bonus skill again, +100 skill in this case. It works in the opposite way as well. If you recraft with lower quality reagents again, you will replace some of the best reagents with bad ones again.
So in this case if you crafted originally with all q3, you’d be getting +100. If you recraft with q1, you’d replace 40% of those with q1’s, so you’d get +60 skill. But luckily if you recraft again with Q1, it’ll just replace the old Q1, so you’d stay at +60 skill. If you then recrafted with Q3 again, you’d go back to +100 again.
Here’s a picture example:
Initial craft with all q1 (+0 skill from reagents):
First recraft with all q3 (+40 skill from reagents):
Second recraft with q3 (+80 skill from reagents):
Final recraft with all q3 (+100 skill from reagents):
Hopefully that helps clear things up!
-Drough
