shell core machine

例句：

1. 1.This new type of machine is designed to improve the efficiency of the production process.
   这种新型机器的设计目的是为了提高生产过程的效率。
2. 2. The shell core machine has been proven to be an effective way to reduce energy consumption.
   这种核壳式机器已被证明是一种有效的降低能源消耗的方法。
3. 3.The shell core machine has become a popular choice for small businesses looking to save on labor costs.
   这种核壳式机器已成为小型企业节省劳动力成本的热门选择。