Profile survey is transportation, water conservancy, electric power engineering construction must be done.

断面测量是交通、水利、电力等工程建设中必须进行的工作。

youdao

Profile survey is transportation, water conservancy, electric power engineering construction must be done.

断面测量是交通、水利、电力等工程建设中必须进行的工作。

youdao