The synthesis of isotactic polymers is usually only possible by means of special sterospecific (stereoregulating)initiators . 通常只能用特殊的立体定向（立体调发）引发剂（Ziegler催化剂）来合成等规聚合物。
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The synthesis of isotactic polymers is usually only possible by means of special sterospecific ( stereoregulating ) initiators 通常只能用特殊的立体定向（立体调发）引发剂（ ziegler催化剂）来合成等规聚合物。
