往复式内燃机 声压法声功率级的测定 第1部分：工程法
Reciprocating internal combustion engines—Measurement of sound power level using sound pressure—Part 1: Engineering method
标准状态
发布于：2026-01-28
实施于：2026-08-01
废止
Reciprocating internal combustion engines—Measurement of sound power level using sound pressure—Part 1: Engineering method