| 标准编号 | BS 5990:1981 (Superseded) |
| 标准名称 | Specification for direct gas fired forced convection air heaters for space heating (60 kW up to 2 MW input): safety and performance requirements (excluding electrical requirements) (2nd family gases) |
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| 发布日期 | 1981-03-31 |
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| 前言 | |
| 无 |
