Also this also often requires an intermediate format, which makes the long-term maintenance of a document more difficult.
同时这通常也需要一种中介格式，使得一份文档的长期维护变得更加困难。
2
This approach results in considerable cost benefits, as the active intermediate converters are no longer necessary and thus acquisition, installation and maintenance costs are reduced.
The damage and maintenance of intermediate tank and intermediate washing tank in WPA are introduced and a simple method, double patching method, is described in detail.