folding frequency

例句：

1. 1.The machine has a high folding frequency, which means it can fold many times in a short period of time.
   这台机器的折叠频率很高，意味着它可以在短时间内折叠很多次。
2. 2. The folding frequency of the material is an important factor to consider when designing a packaging system.
   材料折叠频率是设计包装系统时需要考虑的重要因素。
3. 3. The folding frequency of the material will affect its durability and strength.
   材料的折叠频率会影响其耐用性和强度。