Sand fill and compaction are essential factors of Expendable Pattern Casting(EPC).

砂 的填充及紧实是实型造型工艺技术中的关键因素。

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Product role: Lead is widely used in the proportion of sand fill, anti-toxic rays.

产品作用：铅砂广泛应用于比重填料，防有毒射线。

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If you want to fill a bag with sand, you have to control a kind of truck on wheels and move it into the correct place.

如果你想把一个袋子装满沙子，你必须控制一种有轮子的卡车，并把它移到正确的位置。

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Other sound but basic advice is for people to use sand to fill pools where mosquitoes might breed, to empty and bury any containers that might fill with rain, and to store water for drinking, cooking and washing in covered containers.

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One example of the problem: U.S. soldiers once used bits from ancient Babylon to fill sand bags.

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You could throw it like a small javelin, or stab it into a piece of steak instead of using a fork, or you might take the ink cartridge out of the pen and fill the hollow shell with sand (just because you like sand).

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