sampling method for synthetic filament
合成纤维长丝取样方法 sampling method for synthetic filament yarns 合成短纤维长度试验方法 testing method for length of synthetic staple fibres .
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sampling method for synthetic filament yarns
合成纤维长丝取样方法 sampling method for synthetic filament yarns 棉纤维“马克隆值”试验方法 test method for micronaire value of cotton fibres ..
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