活块 meaning in English

loose part
loose piece

Design of electrode parts is directly related to geometry shape of mould part
电极设计与模具活块有直接的几何相关关系。
A cad system for three dimensional electrode of turbo blade mould part is developed in this paper
摘要开发了一个针对涡轮叶片模具活块的电极零件的cad系统。
Considering design efficiency and machining conditions , the design method proposed in this paper has the characteristic of higher design efficiency and electrode parts are associated to mould parts in geometry shapes
本文提出的设计方法考虑了设计效率和加工因素，因而电极设计效率高，并与模具活块具有几何关联性。