Probing into preventability from water damage of cement concrete pavement 水泥混凝土路面水損害的防治探討
The fault has such characteristics as relative objectivity , uncertainty , gradation , inevitability , and preventability 錯誤具有諸如相對客觀性、不確定性、層次性、不可回避性和可預(yù)防性等特征。