Chinese Journal of Lasers, Volume. 27, Issue 10, 958(2000)
Trapezoid Slit of Slotted Oil Pipe by Laser Cutting
[1] [1] Zhang Shan et al.. Laser cutter of slotted pipe. China Patent, Practical New-Type, ZL 96 2 05220. 5. 1997. 12. 3
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[in Chinese], [in Chinese]. Trapezoid Slit of Slotted Oil Pipe by Laser Cutting[J]. Chinese Journal of Lasers, 2000, 27(10): 958