silver thread roll是什么意思

用法例句

Vacuum sealability of silver wire;

银丝的真空密封性能研究

The influence of thickness of metallic yarn protective coating to its performance;

金银丝保护层涂料涂层厚度对其性能的影响

Study on the epoxy cross-linking assistant agent in the protective coatings on the metallic yarn;

金银丝保护层涂料中环氧交联助剂作用的研究

04 mm thickness wrapping bag could keep brassica juncea var.

用不同包装材料和包装方式对银丝菜常温贮藏的效果、还原型维生素C及还原糖含量的变化进行研究。