Roll of 200 meters can be installed on the tape, the tape greatly reduce the frequency of replacement.
可安装200米的大卷胶带，大大降低更换胶带的频率。
2
An economical technique is presented of conventional tape recording and replay for ultra-low frequency signal.
介绍一种经济实用的用普通磁带记录与回放超低频信号的方法。
3
A new method on dynamic balance. Selected-frequency dynamic equilibrium has been put out and applied Successfully to the reduction of industrial Sewing machine Tape GC301-01 and Tape 885.