| 摘要 |
A passage-forming member (35) is disposed inside the body (30) of an ejector (13), the passage-forming member (35) forming a nozzle passage (13a) and a diffuser passage (13c) with the body (30), and having first members (351, 355, 356, 357) made of a first material and second members (353, 354) made of a second material lower in density than the first material. The first members form the outer circumferential surface of a portion that forms the nozzle passage (13a), the outer circumferential surface including at least a portion that forms the minimum passage area part (30 m) of the nozzle passage (13a). |
