boulder sand
常见例句
- Cemented waste rock filling can be divided into cemented boulder-sand slurry filling, cemented boulder filling and cemented gravel filling.
块石胶结充填可分为块石砂浆胶结充填、块石水泥浆胶结充填、碎石水泥浆胶结充填。 - Pincus was ultimately forced to look beyond Sand Hill Road for cash at Boulder-based Foundry Group, New York-based Union Square Ventures and Avalon Ventures, a firm not well-known outside of biotech circles or its San Diego headquarters.
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