Macadam type bases involving successive layers of crushed rock bound with rock dust were also used.人们曾经使用“石结”基层——几层由石粉黏结在一起连续的碎石层.The construction techniques of cement treated macadam base are always paid more attention ...
The uprising or downfalling of an enterprise lies in its management or administration.企业兴衰主要在经营管理.By now he was quite aware as to whence this powerful uprising had sprung.现在他很清楚,这种强有力的骚动是从哪里来的.He saw vaguely the ship he ...