非开挖工程常用缩略语
AAARHarithmetical average roughness height算术平均粗糙高度AASHTOAmerican Association of State Highway and Transportation Of
非开挖工程常用缩略语
AAARHarithmetical average roughness height算术平均粗糙高度AASHTOAmerican Association of State Highway and Transportation Of
at the same time和on the same time有什么区别吗
at the same time还可以表示转折，而on the same time不可以。1，at the same time：表示转折；同时,然而Never before has the industry had to cope wi
at the same time和on the same time有什么区别吗
at the same time还可以表示转折，而on the same time不可以。1，at the same time：表示转折；同时,然而Never before has the industry had to cope wi
