帮翻译成英语，谢谢

时制定地设计方案也具有一定地理论依据，并且在实际设计中和实际应用中也得到了证实，采取地这些方案是可行的，也是完全必要的。：
When works out the design proposal also to have certain geography to discuss the basis, and also obtained the confirmation in the actual design neutral practical application, uses these plans is feasible, is also completely essential.

Have worked out the field design plan now and then being unable to have the field theory basis certain , have also have got and verification in designing the application neutralizing reality in reality , have adopted a field these schemes are feasible , are also completely necessary.

When the development program is also designed to have some theoretical basis, and in the actual design and practical applications have also been confirmed to take to these programs is feasible, but also absolutely necessary.