A screed blade is coupled to the screed frame and engages the full width of the... M Gallenne,Y Charonnat - International Road & Traffic Conference 被引量: 0发表: 1988年 Water-Worked Gravel Bed: State-of-the-Art Review Such a bed is entirely different from that created in a ...
We walked on some gravel, and some big rocks, over a boardwalk, and crossed a creek by stepping on large rocks. It was a little scary. I kept looking up for the mountain but couldn’t see anything in the solid black sky, lit only by a million stars and a thumbnail moon, which rem...