Double-frequency cipher can solve the problem of multimachine mutual interference fairly good by handling the remote control and autocorrection of welding current.

采用“双频密码”方式解电流的远程节及自动修正，较好地处理了多机相互干扰问题。

They are not only synergic in biologic activities but also interactive in molecularity,which is regulated by the genes of virulence island.

各毒力因子仅在生物学活性具有协同作用,而且在分子水平也是相互影响,受毒力控基因节。

KGF can specifically stimulate the epithelial mitogenesis and regulate the interaction of mesenchyma and epithelia,so it has broad biological functions.

角质细胞生长因子能特异性刺激皮细胞有丝分裂,节间质-皮相互作用,有广泛的生物学功能。