往复式内燃机 声压法声功率级的测定 第4部分：现场测量简易法
Reciprocating internal combustion engines—Measurement of sound power level using sound pressure—Part 4: Survey method for use in situ
标准状态
发布于：2025-08-01
实施于：2026-05-23
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Reciprocating internal combustion engines—Measurement of sound power level using sound pressure—Part 4: Survey method for use in situ