| 标准编号 | BS 1042-1-1.2:1989 |
| 标准名称 | Measurement of fluid flow in closed conduits. Pressure differential devices. Specification for square-edged orifice plates and nozzles (with drain holes, in pipes below 50 mm diameter, as inlet and outlet devices) and other orifice plates |
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| 废止日期 | 1998-07-15 |
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