It has been proved that the mew fibre and its end products must have a bright future and a considerable social and economical benefit.
实践表明此种新纤维及后部产品有其广阔的前景，将产生显著经济效益和社会效益。
It has been proved that the mew fibre and its end products must have a bright future and a considerable social and economical benefit.
实践表明此种新纤维及后部产品有其广阔的前景，将产生显著经济效益和社会效益。
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