entry sand bar 河口砂坝
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Home after entry in wear slippers, best reduce sand dust abrasion on the surface of a landscape stone.
住家最好入门后换穿拖鞋,减少砂粒尘土磨损景观石表面之机会。
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It has been shown that the velocity of sand flow and airflow at the entry of core-box was quite different.
结果表明,射砂孔位置的气流和砂流速度有显著差别。
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