基本解释双链(DNA)(分)同根派生 英汉例句The base line can be set out as a single or double chain.基线可作为一条单链系或双链系。Amphiboles are related to the pyroxenes, forming double chains , again being held together by cations.角闪石类与辉石类有关，构成双链，也是被阳离子联系在一起的。