为什么葵花的小花呈双螺旋型排列呢？

Why are the florets in a sunflower arranged in a double spiral?

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型排列（见图6）适用于各种规格的水泥或生料搅拌库，所有充气箱水平安装。

Type F arrangement (Figure 6) applies all kinds of specification cement or raw material silo. All aerating case is installed horizontally.

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树型布局（见图16）有助于您识别响应事件最慢的排列。

The tree layout (Figure 16) helps you identify which tier has the slowest response time.

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