| 摘要 |
PROBLEM TO BE SOLVED: To provide an extra hard abrasion resistant film in a nozzle hole. SOLUTION: It is possible to provide the extra hard abrasion resistant film in the nozzle hole by the nozzle for extra high pressure water constituting its characteristic feature of integrating a nozzle split into two applied with abrasion resistant processing on the central hole by press-fitting it in an outside cylinder for fastening. COPYRIGHT: (C)2006,JPO&NCIPI
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