常见例句transcriptional-generated supercoil 转录生成(的)超螺旋transcription-generated supercoil 转录生成超螺旋transcriptiongenerated supercoil 转录生成超螺旋negative supercoil 负超螺旋positive supercoil 正超螺旋plectonemic supercoil 同向超螺旋 返回 supercoil