ship unloader machines的用法和樣例：
例句
- This paper brings a novel four-drum electrical differential control system of bridge-type grab ship unloader.
提出一種新型的抓斗卸船機四卷筒電氣差動(dòng)控制系統。 - Grab ship unloader is an important material unloading equipment in ports, and the grab control has direct influence on performance of the complete ship unloader.
摘要抓斗式卸船機是重要的港口卸料設備，抓斗抓取控制的好壞直接影響整臺卸船機的性能。
