为了体验混凝土的优势，防止室内热量的快速流失或者升温过高，钢板凹槽部分用混凝土填充。

To enjoy the benefits of concrete - preventing rapid warming and overheating of the interior - the grooves in the steel sheets are partly filled with concrete.

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凹槽部分形成在顶面部分的内表面中，并且该凹槽部分使得顶面部分的在预定区域中的部分比其它部分更薄。

A groove portion is formed in an inner surface of the top face portion, and this groove portion makes part of the top face portion in a predetermined region less thick than the other part thereof.

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驱动工具部件(100)包括交替的凹槽(104)和凸齿(106)，并且具有锥形部分(108)。

The drive tool component (100) includes alternating flutes (104) and lobes (106) and has a conical section (108).

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