SH/T 0669-1998风冷二冲程汽油机油排气系统堵塞评定法-仪器网
行业标准

SH/T 0669-1998 风冷二冲程汽油机油排气系统堵塞评定法

Exhaust system blocking test procedure for evaluating air-cooled two-stroke gasoline engine oils

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