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silk cocoon 蚕茧;绢蚕;桑蚕茧 例句筛选 1. Test Technique and Equipment for Silk Cocoon Quality 蚕茧质量测试技术与设备 2. Research on the Non-destructive Test Method for Silk Cocoon 蚕茧质量无损检测方法的研究

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Silkworm moth larvae before becoming the cocoon to protect themselves, each cocoon is a continuous-meter-long silk 2000-4000. From cocoon to silk cocoons...

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