Trading volume series is stable than price series, and can be estimated easily.

交易量序列比价格序列更加稳定，具有更高的可预测性。

youdao

This series press structure is simple, performance stable, operational safety.

该系列压力机结构简单，性能稳定、操作安全。

youdao

This series press structure is simple, performance stable, operational safety.

该系列压力机结构简单，性能稳定、操作安全。

youdao