The same functional unit of the drawer has a good interchangeability. 相同功能单元的抽屉具有良好的互换性。
The range offers higher speeds, interchangeability and longer lifetimes. 范围内提供更高的速度，互换性和更长的寿命。
All pumps in this range share the same hydraulic design and offer interchangeability between parts and sub-assemblies. 此系列所有的隔膜真空泵拥有共同的水力设计，在零件和次组件部件之间有着可替代性。
