問題詳情
44. Which of the following application can be used for the laser-beam machining:
(A) drilling nonmetallicmaterials,
(B) small-scale and localized heat treating of metals and ceramics,
(C) welding metals,
(D)trepanning ceramics, or
(E) all of the above?
參考答案
答案：[無官方正解]
難度：計算中-1
書單：沒有書單，新增