| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a protector that maintains wear prevention effect for a long period of time by an inexpensive, simple structure. <P>SOLUTION: The structure, through which a fluid including particles passes, includes a curved member that is installed in the inside wall of the structure so that an inner side of a curved part of the curved member is oriented upstream of the fluid. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
