machine design Typical questions analysis And actual combat simulation Yang angyue + Mechanics principle Yang angyue Chief editor 2 book
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t**7
The authentic font is clear without typos
7**山
Clear printing, no smell of ink, fast delivery, no typos
t**6
The boss has a good service attitude and fine workmanship
蓝**内
The presentation was very detailed and the ideas were clear and easy to understand
t**9
I got it; Clear font; The subtitle size is just right; There is no printing smell when it is opened.
和**0
The printing is clear