链条

　　LIANTIAOYIBANWEIJINSHUDELIANHUANHUOHUANXINGWU，DUOYONGZUOJIXIECHUANDONG、QIANYIN。YONGLAIZHANGAIJIAOTONGTONGDAODELIANXINGWU（RUZAIJIEDAOZHONG、HELIUHUOGANGWANRUKOUCHU），JIXIESHANGCHUANDONGYONGDELIANZI。