flexible u aturated polyester resin
u aturated polyester concrete equipment 不饱和聚酯混凝土设备 flexible u aturated polyester resin 柔性不饱和聚酯树脂 self-extinguishing u aturated polyester resin 自熄性不饱和聚酯树脂 ..
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flexible u aturated polyester resin
柔性饱和聚酯树脂
以上为机器翻译结果，长、整句建议使用 人工翻译 。