CFM 1/2 470K 5% R规格参数
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CFM 1/2 470K 5% T CFM 1/2 5.1 5% R CFM 1/2 5.1K 5% R CFM 1/2 5.1M 5% R CFM 1/2 5.1M 5% T CFM 1/2 5.6K 5% R CFM 1/2 5.6K 5% T CFM 1/2 51 5% T CFM 1/2 510 5% R CFM 1/2 520 5% R