封堵内置有连接螺栓，螺栓上设有防转键及实现连动的外六方套。

Connecting bolts are arranged in the plugging conical points, and an anti-rotation key and an outer six-square sleeve which can realize the linkage are arranged on the screw bolt.

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首尔智囊团世宗研究院的研究员白学顺认为，现在除了继续进行有关核问题的六方会谈外，别无它法。

That, argues Paik Hak Soon, a researcher at the Sejong Institute, a Seoul think tank, means that there is "no other way but to return to the six-party talks for the nuclear issue."

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除常见的立方金刚石结构外，还存在一种罕见的六方金刚石结构。它们通常共存在一个金刚石织构体中，形成共生晶体。

They are made up from both of cubic and hexagonal diamond crystal structures, which are called a sort of intergrowth crystals.

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除常见的立方金刚石结构外，还存在一种罕见的六方金刚石结构。它们通常共存在一个金刚石织构体中，形成共生晶体。

They are made up from both of cubic and hexagonal diamond crystal structures, which are called a sort of intergrowth crystals.

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