Thank you very much to revise quoteIn the quote there are two models, where is the difference between the two models, please?What kind of model is more practical?
Thank you very much again revised quotations in quotations, there are two models, the difference between the two models may I ask where? Which model is more practical?
Thank you very much revised quotations in the quotations has two types of planes, would the two types of planes in differences? What types of planes to more pragmatic?