Considering its direct influence on controlling the top elevation of anchor bolts, the establishment of leveling point is also a very important procedure.

水准点的设立同样相当重要，它直接影响到地脚螺栓顶部标高的控制。

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Cast: Self-leveling construction should avoid direct sunlight and wind, the two casting materials should minimize the gap, to enable them to integrate together to ensure the smooth surface.

浇注：自流平施工应避免阳光直射及风吹，应尽量减少两次浇注材料的间隙，以使其能够融合到一起，保证表面平整。

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At every step of the way Twitter has been a leveling force from the elections in Iraq to the earthquake in Haiti, Twitter has made direct communication in these countries possible.

FORBES: The Case for Twitter