If you like, you can very lightly sand the rudder with fine grade sandpaper.
如果您喜欢，您可以很轻易沙舵与罚款级砂纸。
Fort building is Wong, lime, fine sand mixing, layer by layer filling compaction, very strong.
炮台建筑采用黄泥、石灰、细砂拌和，逐层填筑夯实，非常坚固。
A sedimentary material consisting of very fine particles intermediate in size between sand and clay.
泥沙，淤泥由大小介于沙和泥之间的非常细小的微粒构成的沉淀性物质。
Tunneling in wind stockpiling fine sand is very difficult, since the sand undermined will become very loose and incapable of self-consolidating.
在风积砂地层修建隧道，由于开挖扰动后围岩完全变为松散体，无自稳能力，故施工难度大。
Tunneling in wind stockpiling fine sand is very difficult, since the sand undermined will become very loose and incapable of self-consolidating.
在风积砂地层修建隧道，由于开挖扰动后围岩完全变为松散体，无自稳能力，故施工难度大。
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