The products with higher conductivity are mainly 1, 4-connected head-to-tail chain structure, both benzenoid and quinoid units exist in the polymer chain.

具有较高电导的产物的链结构主要是1,4 -连接的头尾结构，链上同时存在苯式及醌式两种结构单元。

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Due to the existence of the surface, the curves expressing the chain size versus temperature for the tail chain were slightly lower than those for the free chain.

由于刚性壁的影响，使得有限链长的高分子尾形链与自由链相比，其表示链尺寸温度关系的曲线要稍低。

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It shows that the content of head-to-tail chain of the polymer are related to its polymerization temperature, but are not related with the kind of initiators used.

实验表明聚合物的头-头链的含量与聚合温度有关，而与引发剂的种类无关。

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Fitzgerald charged that Libby told FBI agents and the grand jury that "he was at the tail end of a chain of phone calls, passing on from one reporter what he heard from another" about Plame.

CNN: Ex-Cheney aide pleads not guilty