pea gravel concrete 细石混凝土
d and gravel concrete 砂砾石混凝土
consolidated sand and gravel concrete 固结砂砾料混凝土筑坝
concrete gravel 混凝土石子
Concrete Face Sand-Gravel Dam 混凝土面板砂砾石坝
concrete-cored sand-gravel pile 混凝土芯砂石桩
concrete-cored sand-gravel piles 混凝土芯砂石桩
concrete face sand-gravel-fill dam 砂砾石面板坝
concrete face sandy gravel-fill dam 砂砾石均质面板坝
Where 50-kilogram king salmon once fought their way up waterfalls to lay their eggs in gravel beds, there now are only concrete walls holding back still water and deep beds of muddy deposits.
50公斤重的大马哈鱼王曾经奋力爬上瀑布，把卵产在砾石床上，现在只有混凝土墙挡住静止的水和深深的泥床。
These materials will be mixed with lunar soil and gravel to make concrete.
这些材料将与月球土壤和碎石混合制成混凝土。
So in the construction industry concrete is the stuff that results when you mix cement with filler material like sand or gravel.
因此在建筑业范围内，混凝土是水泥与沙或沙砾等填充物混合之后的产物。
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